Iran–United States Relations During The Obama Administration
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Iran–United States relations during the Obama administration (2009–2017) were defined by a shift from confrontation to cautious engagement, culminating in the landmark nuclear agreement of 2015. At the start of Obama's presidency, both sides exchanged public messages signaling a possible thaw, with Iran voicing long-standing grievances and the United States calling for mutual respect and responsibility. However, after
Mahmoud Ahmadinejad Mahmoud Ahmadinejad (born Mahmoud Sabbaghian on 28 October 1956) is an Iranian Iranian principlists, principlist and Iranian nationalism, nationalist politician who served as the sixth president of Iran from 2005 to 2013. He is currently a mem ...
's disputed re-election in 2009, which sparked mass protests and allegations of fraud, the United States responded with skepticism and concern. In late 2011 and early 2012, Iran threatened to close the Strait of Hormuz and warned a U.S. aircraft carrier not to return to the Persian Gulf. The U.S. rejected the warning and maintained its naval presence, while experts doubted Iran's ability to sustain a blockade. The 2013 election of President
Hassan Rouhani Hassan Rouhani (; born Hassan Fereydoun, 12 November 1948) is an Iranian peoples, Iranian politician who served as the seventh president of Iran from 2013 to 2021. He is also a sharia lawyer ("Wakil"), academic, former diplomat and Islamic cl ...
, seen as a moderate, marked a shift in tone, with his outreach at the UN and a historic phone call with Obama signaling renewed diplomatic engagement.Obama speaks with Iranian President Rouhani
''NBC News'' 27 September 2013
While high-level contact resumed and symbolic gestures were exchanged, conservative backlash in Iran highlighted internal divisions over rapprochement. In 2015, the United States and other world powers reached the
Joint Comprehensive Plan of Action The Joint Comprehensive Plan of Action (JCPOA; (, BARJAM)), also known as the Iran nuclear deal or Iran deal, is an agreement to limit the Iranian nuclear program in return for sanctions relief and other provisions. The agreement was finalize ...
(JCPOA) with Iran, under which Iran agreed to limit its nuclear program in exchange for sanctions relief. The agreement marked a major diplomatic achievement for the Obama administration, though it faced skepticism in Congress and mixed public support in the U.S. Despite the JCPOA, tensions between the United States and Iran persisted over ballistic missile tests, continued U.S. sanctions, and European business hesitancy due to fear of U.S. penalties. The administration also faced criticism for its handling of these issues, both from Iran and from political opponents.


State of Iran-U.S. relations in January 2009

At the outset of the Obama administration in January 2009, Iran was led by President
Mahmoud Ahmadinejad Mahmoud Ahmadinejad (born Mahmoud Sabbaghian on 28 October 1956) is an Iranian Iranian principlists, principlist and Iranian nationalism, nationalist politician who served as the sixth president of Iran from 2005 to 2013. He is currently a mem ...
, a hardline conservative known for his confrontational rhetoric toward the West and refusal to halt Iran's nuclear program, while ultimate authority rested with Supreme Leader
Ali Khamenei Ali Hosseini Khamenei (; born 19 April 1939) is an Iranian cleric and politician who has served as the second supreme leader of Iran since 1989. He previously served as the third President of Iran, president from 1981 to 1989. Khamenei's tenure ...
, who held decisive power over Iran's foreign and security policies. Relations between Iran and the United States were tense, marked by escalating concerns over Iran's nuclear activities, growing sanctions, and the absence of direct diplomatic ties since 1980.


Initial outreach and early responses

Two days after
Barack Obama Barack Hussein Obama II (born August 4, 1961) is an American politician who was the 44th president of the United States from 2009 to 2017. A member of the Democratic Party, he was the first African American president in American history. O ...
was elected president in November 2008, Ahmadinejad issued the first congratulatory message to a newly elected American president since 1979: "Iran welcomes basic and fair changes in U.S. policies and conducts. I hope you will prefer real public interests and justice to the never-ending demands of a selfish minority and seize the opportunity to serve people so that you will be remembered with high esteem". In his inaugural speech, President Obama said:
To the
Muslim world The terms Islamic world and Muslim world commonly refer to the Islamic community, which is also known as the Ummah. This consists of all those who adhere to the religious beliefs, politics, and laws of Islam or to societies in which Islam is ...
, we seek a new way forward, based on mutual interest and mutual respect. To those leaders around the globe who seek to sow conflict, or blame their society's ills on the West—know that your people will judge you on what you can build, not what you destroy. To those who cling to power through corruption and deceit and the silencing of dissent, know that you are on the wrong side of history; but that we will extend a hand if you are willing to unclench your fist.
Ahmadinejad issued a list of grievances, including the 1953 coup, support for
Saddam Hussein Saddam Hussein (28 April 1937 – 30 December 2006) was an Iraqi politician and revolutionary who served as the fifth president of Iraq from 1979 until Saddam Hussein statue destruction, his overthrow in 2003 during the 2003 invasion of Ira ...
in the
Iran–Iraq War The Iran–Iraq War, also known as the First Gulf War, was an armed conflict between Iran and Iraq that lasted from September 1980 to August 1988. Active hostilities began with the Iraqi invasion of Iran and lasted for nearly eight years, unti ...
, and the
Iran Air Flight 655 Iran Air Flight 655 was an international scheduled passenger flight from Tehran to Dubai via Bandar Abbas that was shot down on 3July 1988 by two surface-to-air missiles fired by , a United States Navy warship. The missiles hit the Iran Air ...
incident. In March 2009, an official delegation of
Hollywood Hollywood usually refers to: * Hollywood, Los Angeles, a neighborhood in California * Hollywood, a metonym for the cinema of the United States Hollywood may also refer to: Places United States * Hollywood District (disambiguation) * Hollywood ...
actors and filmmakers met with their Iranian counterparts in Tehran as a symbol of United States–Iran relations, but Javad Shamghadri, the Arts Adviser to Ahmadinejad, rejected it and said, "Representatives of Iran's film industry should only have an official meeting with representatives of the academy and Hollywood if they apologize for the insults and accusations against the Iranian nation during the past 30 years". On 19 March 2009, the beginning of the festival of
Nowruz Nowruz (, , () , () , () , () , Kurdish language, Kurdish: () , () , () , () , , , , () , , ) is the Iranian or Persian New Year. Historically, it has been observed by Iranian peoples, but is now celebrated by many ...
, Obama spoke to the Iranian people in a video saying, "The United States wants the Islamic Republic of Iran to take its rightful place in the community of nations. You have that right—but it comes with real responsibilities".


Detentions

In April 2009, Iranian-American journalist
Roxana Saberi Roxana Saberi (born April 26, 1977) is an American journalist who works as a correspondent for CBS News. In 2009, she was held prisoner in Iran's Evin Prison for 101 days under accusations of espionage. She subsequently wrote a book about the e ...
was sentenced to eight years in prison after being convicted of spying for the United States. She was accused of possessing a classified document but denied the charge. After spending four months in prison, she was released in May, and the charge was dropped. Iranian nuclear scientist
Shahram Amiri Shahram Amiri ( ''Šahrâm Amiri''; 8 November 1978 – 3 August 2016) was an Iranian nuclear scientist who disappeared from Iran during 2009–2010 under disputed circumstances, and was executed by the Government of Islamic Republic of Iran, Ira ...
disappeared from Iran during 2009–2010 in May 2009, and Iran accused the United States of abducting him. On 13 July 2010, the
BBC The British Broadcasting Corporation (BBC) is a British public service broadcaster headquartered at Broadcasting House in London, England. Originally established in 1922 as the British Broadcasting Company, it evolved into its current sta ...
reported that Amiri had taken refuge in the Iranian interests section of Pakistani Embassy in Washington, DC, and sought help to reach Iran. However, after his return to Iran, he was sentenced to ten years in prison and in August 2016 was reported to have been executed for treason. On July 9, 2009, the United States released five Iranian diplomats (Mohsen Bagheri, Mahmoud Farhadi, Majid Ghaemi, Majid Dagheri and Abbas Jami), who had been held since January 2007. Some analysts believe this was a part of hostage exchange deal between the countries. The US State Department said the release was not part of a deal with Iran but was necessary under an American–Iraqi security pact.


2009 Iranian presidential election

The
2009 Iranian presidential election Presidential elections were held in Iran on 12 June 2009, with incumbent Mahmoud Ahmadinejad running against three challengers. The next morning the Islamic Republic News Agency, Iran's news agency, announced that with two-thirds of the votes c ...
was held on June 12, 2009. Incumbent President
Mahmoud Ahmadinejad Mahmoud Ahmadinejad (born Mahmoud Sabbaghian on 28 October 1956) is an Iranian Iranian principlists, principlist and Iranian nationalism, nationalist politician who served as the sixth president of Iran from 2005 to 2013. He is currently a mem ...
faced challengers including
Mir-Hossein Mousavi Mir-Hossein Mousavi Khameneh (, ; born 2 March 1942) is an Iranian politician, artist, architect and opposition figure who served as the 45th and last Prime Minister of Iran from 1981 to 1989. He was a reformist candidate for the 2009 Iranian p ...
, a former Prime Minister of Iran, and
Mehdi Karroubi Mehdi Karroubi (, born 26 September 1937) is an Iranian Shia cleric and reformist politician leading the National Trust Party. Following 2009–2010 Iranian election protests, Karroubi was put under house arrest in February 2011. As of 2021, he ...
, a former Speaker of the
Iranian Parliament The Islamic Consultative Assembly (), also called the Iranian Parliament, the Iranian Majles (Arabicised spelling Majlis) or ICA, is the unicameral national legislative body of Iran. The parliament currently consists of 290 representatives, an i ...
. In the lead-up to the election, some reports suggested that the timing of potential U.S.-Iran talks was influenced by the election. On the day of the election, President Obama expressed optimism about the "robust debate" in Iran. After Ahmadinejad's controversial landslide victory, allegations of widespread fraud sparked mass protests, later known as the
Green Movement Green politics, or ecopolitics, is a political ideology that aims to foster an ecologically sustainable society often, but not always, rooted in environmentalism, nonviolence, social justice and grassroots democracy. Wall 2010. p. 12-13. It ...
.Hooman Majd
Think Again: Iran's Green Movement: It's a civil rights movement, not a revolution
''Foreign Policy'' (January 6, 2017).
The protests were the largest in Iran since the 1979 revolution. The U.S. response was initially cautious, but as reports of violent crackdowns and voting irregularities emerged, the tone shifted. On June 15, the State Department raised concerns about arrests and irregularities, while U.S. Vice President Joe Biden criticized the suppression of speech. As the protests grew, Obama condemned the Iranian government's response, stating, "In 2009 no iron fist is strong enough to shut off the world from bearing witness to the peaceful pursuit of justice. Despite the Iranian government's efforts to expel journalists and isolate itself, powerful images and poignant words have made their way to us through cell phones and computers, and so we have watched what the Iranian people are doing." He added: "This is not about the United States and the West. This is about the people of Iran, and the future that they – and only they – will choose." He emphasized that the U.S. respected Iranian sovereignty but said, "I am deeply troubled by the violence that I've been seeing on television. I think that the democratic process – free speech, the ability of people to peacefully dissent – all those are universal values and need to be respected."Josh Levs
Fact Check: Was Obama 'silent' on Iran 2009 protests?
CNN (October 9, 2012).
After further violence against protesters, Obama issued a stronger condemnation, stating that the U.S. and the international community were: "appalled and outraged by the threats, beatings and imprisonments of the last few days" and issued a strong condemnation of "these unjust actions." Some critics, including his 2012 presidential campaign rival
Mitt Romney Willard Mitt Romney (born March 12, 1947) is an American businessman and retired politician. He served as a United States Senate, United States senator from Utah from 2019 to 2025 and as the 70th governor of Massachusetts from 2003 to 2007 ...
, argued that Obama should have done more to support the Green Movement. Others disagreed, arguing that direct U.S. support for the
Iranian opposition The Iranian opposition consists of groups and individuals in Iran who oppose the government of the Islamic Republic since its foundation in 1979. These groups are ideologically diverse, ranging from monarchists to supporters of parliamentary dem ...
could damage its credibility and reinforce the regime's claim that the movement is a foreign-backed plot threatening Iran's sovereignty.


2010 Sanctions Act

On July 1, 2010, Obama signed the Comprehensive Iran Sanctions, Accountability, and Divestment Act of 2010 (CISADA) as part of the broader campaign to pressure Iran over its nuclear program. CISADA extended the U.S. economic sanctions imposed under the Iran Sanctions Act of 1996, targeting companies and individuals who aid Iran's petroleum sector and aiming to reduce Iranian dependence on gasoline imports. The restrictions in the new law were so stringent that some third countries have warned about interference with their trade. The sanctions have significantly impacted Iran, with its oil exports being halved during this period.


Drone incidents

On December 4, 2011, an American Lockheed Martin RQ-170 Sentinel UAV, operated by the CIA, was captured by Iranian forces near
Kashmar Kashmar (; ) is a city in the Central District of Kashmar County, Razavi Khorasan province, Iran, serving as capital of both the county and the district. Kashmar is near the river Shesh Taraz in the western part of the province, and sou ...
. Iran claimed it seized the drone using cyber warfare, while the U.S. initially stated it had malfunctioned and crashed. Later, the U.S. admitted the drone was intact after Iranian TV aired footage of it. In November 2012, Iranian
Su-25 The Sukhoi Su-25 ''Grach'' ( ('' rook''); NATO reporting name: Frogfoot) is a subsonic, single-seat, twin-engine jet aircraft developed in the Soviet Union by Sukhoi. It was designed to provide close air support for Soviet Ground Forces. The ...
jets fired on a U.S. drone over international waters and pursued it before returning to base. In March 2013, an Iranian F-4 jet also pursued a U.S. MQ-1 drone, but was warned off by U.S. fighter jets.


Strait of Hormuz dispute

In late December 2011, Iranian navy chief Admiral Habibollah Sayyari was reported to have said that it would be "very easy" for Iran to close the
Straits of Hormuz The Strait of Hormuz ( ''Tangeh-ye Hormoz'' , ''Maḍīq Hurmuz'') is a strait between the Persian Gulf and the Gulf of Oman. It provides the only sea passage from the Persian Gulf to the open ocean and is one of the world's most strategica ...
. On 3 January 2012 Iran's army chief
Ataollah Salehi Ataollah Salehi (; born 9 March 1950) is the former and third commander-in-chief of the Islamic Republic of Iran Army, serving from 2005 until 2017. He graduated before the Islamic Revolution from the Iranian Army's military academy in 1971 with ...
warned "We recommend to the American warship that passed through the Strait of Hormuz and went to
Gulf of Oman The Gulf of Oman or Sea of Oman ( ''khalīj ʿumān''; ''daryâ-ye omân''), also known as Gulf of Makran or Sea of Makran ( ''khalīj makrān''; ''daryâ-ye makrān''), is a gulf in the Indian Ocean that connects the Arabian Sea with th ...
not to return to the Persian Gulf". However, this was later denied by the Defense Minister of Iran. The warship is believed to be the American aircraft carrier which recently vacated the area as Iran conducted a 10-day naval exercise near the Strait of Hormuz. Salehi was also quoted as saying "We have no plan to begin any irrational act but we are ready against any threat." The US Navy responded that it will continue with its regularly scheduled deployments, in accordance with international maritime conventions. In 2012, the United States Navy was warned that Iran was preparing suicide attack boats and was building up its naval forces in the Gulf region. At a briefing in
Bahrain Bahrain, officially the Kingdom of Bahrain, is an island country in West Asia. Situated on the Persian Gulf, it comprises a small archipelago of 50 natural islands and an additional 33 artificial islands, centered on Bahrain Island, which mak ...
, Vice Admiral Mark Fox told reporters the US Navy's Fifth Fleet could prevent Iran from blocking the Strait of Hormuz. The actual ability of Iran to close the strait has been questioned by experts, with estimates of the time that Iran would be able to sustain the closure ranging from a few days to over a hundred days.


Attempts at rapprochement

Hassan Rouhani Hassan Rouhani (; born Hassan Fereydoun, 12 November 1948) is an Iranian peoples, Iranian politician who served as the seventh president of Iran from 2013 to 2021. He is also a sharia lawyer ("Wakil"), academic, former diplomat and Islamic cl ...
, a former nuclear negotiator and cleric seen as a political moderate, was elected president of Iran in June 2013 on a platform promising greater engagement with the international community and relief from economic sanctions. His visit to
New York City New York, often called New York City (NYC), is the most populous city in the United States, located at the southern tip of New York State on one of the world's largest natural harbors. The city comprises five boroughs, each coextensive w ...
to address the
United Nations General Assembly The United Nations General Assembly (UNGA or GA; , AGNU or AG) is one of the six principal organs of the United Nations (UN), serving as its main deliberative, policymaking, and representative organ. Currently in its Seventy-ninth session of th ...
in September 2013 was hailed as progress in the countries′ relationship. His television interviews and public addresses while in the U.S. were seen as an effort to convey the message Iran posed no threat and that he was ready to do business with the West. The Obama administration had in turn made a symbolic gesture by making the first official U.S. acknowledgement of the CIA's role in the ousting of Iran's democratically elected government of
Mohammad Mosaddegh Mohammad Mosaddegh (, ; 16 June 1882 – 5 March 1967) was an Iranian politician, author, and lawyer who served as the 30th Prime Minister of Iran from 1951 to 1953, elected by the 1950 Iranian legislative election, 16th Majlis. He was a membe ...
. Obama requested a bilateral meeting with Rouhani, which didn't take place; Rouhani later explained that more time was needed to organize a proper meeting given the two countries’ troubled history. On 26 September, Iran and the U.S. held their first substantive high-level meeting since the 1979 revolution at multilateral talks that involved the U.S. secretary of state, John Kerry, and the Iranian foreign minister, Mohammad Javad Zarif, the meeting being chaired by the EU foreign policy chief,
Catherine Ashton Catherine Margaret Ashton, Baroness Ashton of Upholland (born 20 March 1956) is a Labour Party (UK), British Labour politician who served as the High Representative of the Union for Foreign Affairs and Security Policy and Vice-President of th ...
. The rare get-together was groundbreaking, according to Iranian analysts. The following day, Rouhani and Obama spoke by telephone, the two countries' highest political exchange since 1979. The call led to protests by Iranian conservatives who chanted "
death to America "Death to America" is an anti-American political slogan widely used in Iran,Arash KaramiKhomeini Orders Media to End 'Death to America' Chant, Iran Pulse, October 13, 2013 Afghanistan, Lebanon, Yemen, Iraq, and Pakistan. Ruhollah Khomeini, the f ...
" when Rouhani returned to Tehran. On the 34th anniversary of the embassy siege, tens of thousands of supporters of a more hardline approach to relations gathered at the site of the former US embassy to denounce rapprochement. It was the largest such gathering in recent years. Conversely, a majority of Iranian citizens saw the progression of peace talks with the United States as a sign of hope for a future of an alliance between the two nations. In 2014, the United States and Iran began unofficial limited cooperation in the fight against the terrorist organization
Islamic State in Iraq and the Levant The Islamic State (IS), also known as the Islamic State of Iraq and the Levant (ISIL), the Islamic State of Iraq and Syria (ISIS) and Daesh, is a transnational Salafi jihadist organization and unrecognized quasi-state. IS occupied signi ...
(ISIL). In February 2015, former Congressman
Jim Slattery James Charles Slattery (born August 4, 1948) is an American politician. He served in the U.S. House of Representatives from 1983 to 1995 representing Kansas's 2nd congressional district as a Democrat, was the Democratic nominee for governor in ...
claimed to have visited Iran in December 2014 from an invitation by the Iranian government where he attended the World Against Violence and Extremism conference making him the first American lawmaker to visit the country after the
Iranian Revolution The Iranian Revolution (, ), also known as the 1979 Revolution, or the Islamic Revolution of 1979 (, ) was a series of events that culminated in the overthrow of the Pahlavi dynasty in 1979. The revolution led to the replacement of the Impe ...
. He claimed to have met with President Rouhani stating that Rouhani was "deeply committed to improving this relationship with the United States". The visit came at a time during negotiations leading to the JCPOA. On 28 September 2015, an unplanned and "accidental" encounter between US President Barack Obama and Iranian Minister of Foreign Affairs
Javad Zarif Mohammad Javad Zarif (; born 8 January 1960) is an Iranian career diplomat and academic. He served as the vice president for strategic affairs from August 2024 to March 2025.United Nations General Assembly The United Nations General Assembly (UNGA or GA; , AGNU or AG) is one of the six principal organs of the United Nations (UN), serving as its main deliberative, policymaking, and representative organ. Currently in its Seventy-ninth session of th ...
, with the two men reportedly shaking hands. It was the first handshake between a US president and a top Iranian diplomat since the
1979 Islamic Revolution The Iranian Revolution (, ), also known as the 1979 Revolution, or the Islamic Revolution of 1979 (, ) was a series of events that culminated in the overthrow of the Pahlavi dynasty in 1979. The revolution led to the replacement of the Impe ...
. US Secretary of State
John Kerry John Forbes Kerry (born December 11, 1943) is an American attorney, politician, and diplomat who served as the 68th United States secretary of state from 2013 to 2017 in the Presidency of Barack Obama#Administration, administration of Barac ...
, who was present, also introduced Obama to two senior Iranian officials also involved in the JCPOA nuclear negotiations. The exchange was originally reported in Iranian media and was said to have lasted "less than a minute"; it was immediately condemned by conservative Iranian MP Mansour Haghighatpour, a member of the committee on national security and foreign policy, who called for Zarif to publicly apologize.


Iran nuclear deal (JCPOA)

In late 2009, the United States moved forward with a nuclear weapons production program initiated under the Bush administration. Known as the “Complex Modernization” initiative, the plan aimed to expand two nuclear facilities to produce new bomb components—specifically, new plutonium pits at the Los Alamos laboratory in New Mexico and enhanced enriched uranium processing at the Y-12 plant in Oak Ridge, Tennessee. After several rounds of negotiations, on 24 November 2013, the Geneva interim agreement, officially titled the ''Joint Plan of Action'', was signed between Iran and several countries including the U.S. It consisted of a short-term freeze of portions of
Iran's nuclear program The Nuclear technology, nuclear program of Iran is one of the most scrutinized nuclear programs in the world. The military capabilities of the program are possible through its mass Enriched uranium, enrichment activities in facilities such a ...
in exchange for decreased economic sanctions on Iran, as the countries work towards a long-term agreement. Implementation of the agreement began 20 January 2014. On 14 July 2015, the
Joint Comprehensive Plan of Action The Joint Comprehensive Plan of Action (JCPOA; (, BARJAM)), also known as the Iran nuclear deal or Iran deal, is an agreement to limit the Iranian nuclear program in return for sanctions relief and other provisions. The agreement was finalize ...
(JCPOA, or the Iran deal) was agreed upon between Iran and a group of world powers: the
P5+1 P5 may refer to: In science and technology * 311P/PANSTARRS, also known as P/2013 P5 (PANSTARRS), an asteroid discovered by the Pan-STARRS telescope on 27 August 2013 * P5 Truss Segment, an element of the International Space Station * Period ...
(the
permanent members of the United Nations Security Council The permanent members of the United Nations Security Council (also known as the Permanent Five, Big Five, or P5) are the five sovereign states to whom the Charter of the United Nations, UN Charter of 1945 grants a permanent seat on the United N ...
—the United States, the United Kingdom, Russia, France, and China—plus Germany) and the European Union. The Obama administration agreed to lift sanctions on Iran that had devastated their economy for years, in return Iran promised to give up their nuclear capabilities and allow workers from the UN to do facility checks whenever they so please. President Obama urged US Congress to support the nuclear deal reminding politicians that were wary that if the deal fell through, the US would reinstate their sanctions on Iran.Mehta, S. (2015). "P5+1 – Iran Nuclear Agreement – A Silver Lining in US-Iran Relations." ''Seton Hall Journal of Diplomacy and International Relations'', Vol. 16, Iss. 2. Still, the lawmakers had a negative approach towards Iran, viewing it as a security threat to the US, its allies, and the international community, in line with existing stereotypical depictions of the country. Following the deal, the U.S. supported a
UN Security Council The United Nations Security Council (UNSC) is one of the six principal organs of the United Nations (UN) and is charged with ensuring international peace and security, recommending the admission of new UN members to the General Assembly, an ...
resolution that endorsed the JCPOA—the
United Nations Security Council Resolution 2231 United Nations Security Council Resolution 2231 was a 20 July 2015 resolution endorsing the Joint Comprehensive Plan of Action on the nuclear program of Iran. It sets out an inspection process and schedule while also preparing for the removal of U ...
of 20 July 2015. The resolution welcomed "Iran's reaffirmation in the JCPOA that it will under no circumstances ever seek, develop or acquire any nuclear weapons". The JCPOA received a mixed international
reaction Reaction may refer to a process or to a response to an action, event, or exposure. Physics and chemistry *Chemical reaction *Nuclear reaction *Reaction (physics), as defined by Newton's third law * Chain reaction (disambiguation) Biology and ...
. Many countries expressed praise or hope it could achieve the denuclearization of Iran,"Iran deal 'sufficiently robust' for 10 years, says France's foreign minister Laurent Fabius"
, ''The Economic Times'', Reuters (14 July 2015).
while Iranian adversaries in the Middle East, including Israel and Saudi Arabia, were negative. Israeli Prime Minister
Benjamin Netanyahu Benjamin Netanyahu (born 21 October 1949) is an Israeli politician who has served as the prime minister of Israel since 2022, having previously held the office from 1996 to 1999 and from 2009 to 2021. Netanyahu is the longest-serving prime min ...
called the agreement a historic mistake for the world. "Iran is going to receive a sure path to nuclear weapons," he said. In the U.S., the Iran deal was met with almost unanimous derision and denunciation by conservatives in the United States. Within days of the finalization of the deal, all Republican Party candidates for president in the 2016 election had issued a public statement criticizing the deal in one form or another. Public opinion in the United States on the deal shifted over time. In 2015, a clear majority supported negotiations and lifting sanctions in exchange for nuclear limits, with
The Washington Post ''The Washington Post'', locally known as ''The'' ''Post'' and, informally, ''WaPo'' or ''WP'', is an American daily newspaper published in Washington, D.C., the national capital. It is the most widely circulated newspaper in the Washington m ...
reporting a 2-to-1 margin in favor. Early surveys also showed majority support for honoring international agreements. However, by 2016 and 2017, support had declined: Gallup found only 30% approval in 2016, with 57% disapproval, and a 2017 poll by Lobe Log reported similar figures, indicating sustained opposition. In January 2016, shortly after the JCPOA took effect, the United States and Iran resolved a long-standing financial dispute stemming from a 1979 arms deal that was canceled following the Iranian Revolution. The U.S. agreed to pay Iran $1.7 billion: $400 million in principal and $1.3 billion in interest. According to the Obama administration, the payment was made in cash due to sanctions that restricted conventional banking channels. While critics, particularly in the Republican Party, characterized the payment as a "ransom" for hostages, the White House stated that the timing coincided with the JCPOA implementation but was part of a separate legal settlement under the Hague Tribunal.


Project Cassandra

Project Cassandra was a U.S.
Drug Enforcement Administration The Drug Enforcement Administration (DEA) is a Federal law enforcement in the United States, United States federal law enforcement agency under the U.S. Department of Justice tasked with combating illicit Illegal drug trade, drug trafficking a ...
(DEA) initiative launched in 2008 to disrupt
Hezbollah Hezbollah ( ; , , ) is a Lebanese Shia Islamist political party and paramilitary group. Hezbollah's paramilitary wing is the Jihad Council, and its political wing is the Loyalty to the Resistance Bloc party in the Lebanese Parliament. I ...
's funding networks by targeting its involvement in international drug trafficking and money laundering. While the operation uncovered significant links between Hezbollah and organized crime, its later years were marked by controversy over allegations that enforcement efforts were slowed to protect the JCPOA negotiations with Iran—a claim disputed by former officials.


U.S.–Iran naval incident

On January 12, 2016, two
United States Navy The United States Navy (USN) is the naval warfare, maritime military branch, service branch of the United States Department of Defense. It is the world's most powerful navy with the largest Displacement (ship), displacement, at 4.5 millio ...
riverine command boats were seized by
Iran Iran, officially the Islamic Republic of Iran (IRI) and also known as Persia, is a country in West Asia. It borders Iraq to the west, Turkey, Azerbaijan, and Armenia to the northwest, the Caspian Sea to the north, Turkmenistan to the nort ...
's
Islamic Revolutionary Guard Corps The Islamic Revolutionary Guard Corps (IRGC), also known as the Iranian Revolutionary Guards, is a multi-service primary branch of the Islamic Republic of Iran Armed Forces, Iranian Armed Forces. It was officially established by Ruhollah Khom ...
(IRGC)
Navy A navy, naval force, military maritime fleet, war navy, or maritime force is the military branch, branch of a nation's armed forces principally designated for naval warfare, naval and amphibious warfare; namely, lake-borne, riverine, littoral z ...
after they entered Iranian territorial waters near Iran's
Farsi Island Farsi Island () is a tiny, barren Iranian island (Bushehr province) in the Persian Gulf. There is an IRGC Navy base on this island. The island has an area of about and is restricted from the public. The center of Farsi Island is located at lati ...
in the
Persian Gulf The Persian Gulf, sometimes called the Arabian Gulf, is a Mediterranean seas, mediterranean sea in West Asia. The body of water is an extension of the Arabian Sea and the larger Indian Ocean located between Iran and the Arabian Peninsula.Un ...
. Initially, the U.S. military claimed the sailors inadvertently entered Iranian waters owing to mechanical failure, but it was later reported that they entered Iranian waters because of navigational errors. U.S. Secretary of State
John Kerry John Forbes Kerry (born December 11, 1943) is an American attorney, politician, and diplomat who served as the 68th United States secretary of state from 2013 to 2017 in the Presidency of Barack Obama#Administration, administration of Barac ...
called Iranian foreign minister
Mohammad Javad Zarif Mohammad Javad Zarif (; born 8 January 1960) is an Iranian career diplomat and academic. He served as the vice president for strategic affairs from August 2024 to March 2025.Obama administration Barack Obama's tenure as the 44th president of the United States began with his first inauguration on January 20, 2009, and ended on January 20, 2017. Obama, a Democrat from Illinois, took office following his victory over Republican nomine ...
as an unintended benefit of the new diplomatic relationship. Iran released pictures of captured U.S. sailors. Some U.S. Republican 2016 presidential candidates such as
Ted Cruz Rafael Edward Cruz (; born December 22, 1970) is an American politician and attorney serving as the junior United States senator from Texas since 2013. A member of the Republican Party, Cruz was the solicitor general of Texas from 2003 ...
,
Marco Rubio Marco Antonio Rubio (; born May 28, 1971) is an American politician, lawyer, and diplomat serving since 2025 as the 72nd United States Secretary of State, United States secretary of state. A member of the Republican Party (United States) , Rep ...
, and
Donald Trump Donald John Trump (born June 14, 1946) is an American politician, media personality, and businessman who is the 47th president of the United States. A member of the Republican Party (United States), Republican Party, he served as the 45 ...
criticized the U.S. response to the detention, which they deemed too weak.


Continued tensions

Although the JCPOA removed sanctions tied to Iran's nuclear program, the United States continued to enforce sanctions concerning
human rights violations Human rights are universally recognized moral principles or norms that establish standards of human behavior and are often protected by both national and international laws. These rights are considered inherent and inalienable, meaning t ...
, support for terrorism, and ballistic missile activities. Iran frequently criticized this dual-track approach as undermining the spirit of the agreement, even if not in legal violation, and cited it as evidence of bad faith. Additionally, European banks and corporations were hesitant to engage with Iran due to the risk of U.S. secondary sanctions, which discouraged financial and commercial transactions despite the lifting of nuclear-related sanctions. During this period, the United States backed the
People's Mojahedin Organization of Iran The People's Mojahedin Organization of Iran (PMOI), also known as Mojahedin-e-Khalq (MEK) or Mojahedin-e-Khalq Organization (MKO) (), is an Iranian dissident organization. It was an armed group until 2003, afterwards transitioning into a politica ...
(MEK), an exiled opposition group that had once allied with
Saddam Hussein Saddam Hussein (28 April 1937 – 30 December 2006) was an Iraqi politician and revolutionary who served as the fifth president of Iraq from 1979 until Saddam Hussein statue destruction, his overthrow in 2003 during the 2003 invasion of Ira ...
during the
Iran–Iraq War The Iran–Iraq War, also known as the First Gulf War, was an armed conflict between Iran and Iraq that lasted from September 1980 to August 1988. Active hostilities began with the Iraqi invasion of Iran and lasted for nearly eight years, unti ...
and was delisted as a terrorist organization by the U.S. in 2012. The MEK received public support from several high-profile American politicians and was promoted by some as a viable alternative to Iran's current leadership. On 8 and 9 March 2016 the IRGC conducted ballistic missile tests as part of its military drills, with one of the Qadr H missiles carrying the inscription, "Israel should be wiped off the Earth." Israel called on Western powers to punish Iran for the tests, which U.S. officials said did not violate the nuclear deal but might violate
United Nations Security Council Resolution 2231 United Nations Security Council Resolution 2231 was a 20 July 2015 resolution endorsing the Joint Comprehensive Plan of Action on the nuclear program of Iran. It sets out an inspection process and schedule while also preparing for the removal of U ...
. Iranian Foreign Minister
Mohammad Javad Zarif Mohammad Javad Zarif (; born 8 January 1960) is an Iranian career diplomat and academic. He served as the vice president for strategic affairs from August 2024 to March 2025.U.S. Treasury Department sanctioned Iranian and British companies for involvement in the Iranian ballistic missile program. On 21 May 2016 Zarif, during a meeting with his New Zealander counterpart
Murray McCully Murray Stuart McCully (born 19 February 1953) is a New Zealand former politician. He is a member of the National Party, and served as Minister of Foreign Affairs from 2008 to 2017. Early life Born in Whangārei, McCully was educated at Arap ...
, while statements of support (like those from the U.S.) are politically helpful, they are not sufficient unless matched by action — especially to resolve obstacles created by years of sanctions and U.S. hostility.


US Supreme Court decision about frozen Iranian assets

In parallel with ongoing sanctions and legal disputes, tensions also extended into the judiciary. In April 2016, the
U.S. Supreme Court The Supreme Court of the United States (SCOTUS) is the highest court in the federal judiciary of the United States. It has ultimate appellate jurisdiction over all U.S. federal court cases, and over state court cases that turn on question ...
ruled that Iran must pay nearly $2 billion to victims of the 1983 Beirut barracks bombings. Although U.S. troops generally have no legal right to sue under combat rules, the judge determined they were on a peacekeeping mission under peacetime rules of engagement. As a result, survivors and family members were allowed to sue Iran under a 1996 law permitting U.S. citizens to take legal action against nations that sponsor terrorism.


Proxy confrontations in Syria and Yemen

Meanwhile, Iran and the United States engaged in indirect military confrontation during the
Arab Spring The Arab Spring () was a series of Nonviolent resistance, anti-government protests, Rebellion, uprisings, and Insurgency, armed rebellions that spread across much of the Arab world in the early 2010s. It began Tunisian revolution, in Tunisia ...
, primarily in
Syria Syria, officially the Syrian Arab Republic, is a country in West Asia located in the Eastern Mediterranean and the Levant. It borders the Mediterranean Sea to the west, Turkey to Syria–Turkey border, the north, Iraq to Iraq–Syria border, t ...
following an uprising against the pro-Iranian dictator
Bashar al-Assad Bashar al-Assad (born 11September 1965) is a Syrian politician, military officer and former dictator Sources characterising Assad as a dictator: who served as the president of Syria from 2000 until fall of the Assad regime, his government ...
, with both sides supporting opposing factions. Iran backed al-Assad through proxy forces, viewing his regime as vital to its regional interests. The U.S.,
Turkey Turkey, officially the Republic of Türkiye, is a country mainly located in Anatolia in West Asia, with a relatively small part called East Thrace in Southeast Europe. It borders the Black Sea to the north; Georgia (country), Georgia, Armen ...
,
Qatar Qatar, officially the State of Qatar, is a country in West Asia. It occupies the Geography of Qatar, Qatar Peninsula on the northeastern coast of the Arabian Peninsula in the Middle East; it shares Qatar–Saudi Arabia border, its sole land b ...
, and
Saudi Arabia Saudi Arabia, officially the Kingdom of Saudi Arabia (KSA), is a country in West Asia. Located in the centre of the Middle East, it covers the bulk of the Arabian Peninsula and has a land area of about , making it the List of Asian countries ...
supported the uprising, with the latter three funding revolutionary groups. As the conflict escalated into a broader
civil war A civil war is a war between organized groups within the same Sovereign state, state (or country). The aim of one side may be to take control of the country or a region, to achieve independence for a region, or to change government policies.J ...
, it evolved into a proxy struggle between Russia and the United States, with Russia largely supporting Iranian efforts in Syria to contain
rebels A rebel is a participant in a rebellion. Rebel or rebels may also refer to: People * Rebel (given name) * Rebel (surname) * Patriot (American Revolution), during the American Revolution * American Southerners, as a form of self-identification; ...
. Iran, Russia, and Syria, alongside
Hezbollah Hezbollah ( ; , , ) is a Lebanese Shia Islamist political party and paramilitary group. Hezbollah's paramilitary wing is the Jihad Council, and its political wing is the Loyalty to the Resistance Bloc party in the Lebanese Parliament. I ...
and
Iraq Iraq, officially the Republic of Iraq, is a country in West Asia. It is bordered by Saudi Arabia to Iraq–Saudi Arabia border, the south, Turkey to Iraq–Turkey border, the north, Iran to Iran–Iraq border, the east, the Persian Gulf and ...
, formed a
military coalition A coalition is formed when two or more people or groups temporarily work together to achieve a common goal. The term is most frequently used to denote a formation of power in political, military, or Economy, economic spaces. Formation According ...
, which was viewed by the U.S. as an attempt by said countries to antagonize the West. Iran and the U.S. also engaged in proxy warfare in
Yemen Yemen, officially the Republic of Yemen, is a country in West Asia. Located in South Arabia, southern Arabia, it borders Saudi Arabia to Saudi Arabia–Yemen border, the north, Oman to Oman–Yemen border, the northeast, the south-eastern part ...
, where the U.S. supported the
Saudi Arabian–led intervention in Yemen On 26 March 2015, Saudi Arabia, leading a coalition of nine countries from West Asia and North Africa, launched a military intervention in Yemen at the request of Yemeni president Abdrabbuh Mansur Hadi, who had been ousted from the capital, Sa ...
. The U.S. officially intervened in October 2016 after the
Houthis The Houthis, officially known as Ansar Allah, is a Zaydism, Zaydi Shia Islamism, Shia Islamist political and military organization that emerged from Yemen in the 1990s. It is predominantly made up of Zaydi Shias, with their namesake leadersh ...
attacked a
United States Navy The United States Navy (USN) is the naval warfare, maritime military branch, service branch of the United States Department of Defense. It is the world's most powerful navy with the largest Displacement (ship), displacement, at 4.5 millio ...
ship. Iran has supported the rebel Houthis, while the Saudi coalition supported the government of
Abdrabbuh Mansur Hadi Abdrabbuh Mansour Hadi (born 1 September 1945) is a Yemeni politician and former military officer who served as the second president of Yemen from 2012 until his resignation in 2022. He previously served as the second vice president of Yemen fro ...
.


See also

*
American Iranian Council The American Iranian Council (AIC) was formed in 1990 as a US-based bi-partisan think tank focused upon promoting better relations between the United States and Iran. Former United States Secretary of State Cyrus Vance was the original honorary ...
*
Correspondence between Barack Obama and Ali Khamenei Correspondence between Barack Obama and Ali Khamenei started with direct and confidential letters sent by US President Barack Obama to Iranian leader Ali Khamenei aimed at persuading him to negotiate. Ali Shamkhani, Representative of the Supr ...
*
Foreign policy of the Barack Obama administration The term Obama Doctrine is frequently used to describe the principles of Foreign policy of the United States, US foreign policy under the Presidency of Barack Obama, Obama administration (2009–2017). He relied chiefly on his two highly experi ...
*
Iran–America Society The Iran–America Society was founded in the 1950s in Tehran, Iran to promote understanding between the people of Iran and the people of the United States of America. The founding Chairman of the Board was Ralph E. Becket. David Nalle was one o ...
*
Iran and state-sponsored terrorism Since the Iranian Revolution in 1979, the government of the Islamic Republic of Iran has been accused by several countries of training, financing, and providing weapons and safe havens for non-state militant actors, such as Hezbollah in Lebanon, ...
*
Iran nuclear deal framework The Iran nuclear deal framework was a preliminary framework agreement reached in 2015 between the Islamic Republic of Iran and a group of world powers: the P5+1 (the permanent members of the United Nations Security Council—the United Stat ...
*
Iran–United States relations Relations between Iran and the United States began in the mid-to-late 19th century, when Iran was known to the Western world as Qajar Persia. Persia was very wary of British and Russian colonial interests during the Great Game. By contrast, the ...
*
Iran–United States relations during the George W. Bush administration Iran–United States relations during the George W. Bush administration (2001–2009) were marked by heightened tensions, mutual distrust, and periodic attempts at limited engagement. Following the September 11 attacks in 2001, Iran initially ...
*
Iran–United States relations during the first Trump administration Iran–United States relations during the first Trump administration (2017–2021) were marked by a sharp policy shift from Iran–United States relations during the Obama administration, Obama's engagement-oriented approach. Trump began with ...
*
Iran–United States relations during the Biden administration Iran–United States relations during the Biden administration (2021–2025) were shaped by efforts to revive the 2015 nuclear agreement alongside ongoing regional tensions, sanctions, cyberattacks, and proxy conflicts. Early in Joe Biden’ ...
*
Iran–United States relations during the second Trump administration This article covers Iran–United States relations, relations between Iran and the United States during the second presidency of Donald Trump. State of Iran-U.S. relations in January 2025 Iran and Iran-backed groups By early 2025, Iran ...
*
Iranian Americans Iranian-Americans, also known as Persian-Americans, are United States citizens or nationals who are of Iranian ancestry, or who hold Iranian citizenship. Most Iranian-Americans arrived in the United States after 1979, as a result of the Irani ...
* List of ambassadors of Iran to the United States * Famous Americans in Iran *
Great Satan "Great Satan" () is a derogatory epithet used in some Muslim world, Muslim-majority countries to refer to the United States. Alongside the "Death to America" slogan, it originated in Iran during the Iranian Revolution, Islamic Revolution. While ...
and
Little Satan "Little Satan" (; ; ) is an anti-Zionist derogatory epithet used especially by Iranian leaders for Israel. Usage history According to some sources Ruhollah Khomeini, leader of Iranian Revolution, first used the term in its contemporary meaning. ...
* Global arrogance * Middle Eastern foreign policy of the Barack Obama administration *
Views on military action against Iran Military action against Iran is often deemed a controversial topic. Proponents of a strike against Iran point to the threat presented by Iran's nuclear program as a casus belli. Many Israelis, and particularly hardline politicians such as Prime ...
* Shia crescent *
Tehrangeles Tehrangeles () (or Little Persia) is a portmanteau deriving from the combination of ''Tehran'', the capital of Iran, and ''Los Angeles''. A Persian community developed in Westwood, Los Angeles, after the Islamic Revolution of 1979 prompted tho ...
*
Academic relations between Iran and the United States Academic relations between Iran and the United States involve a branch of cultural relations between the two countries that became widespread, especially during the Pahlavi dynasty era. Higher education in Iran during the modern era generally be ...
*
United States cultural diplomacy in Iran The United States Cultural Diplomacy in Iran refers to the use of soft power of cultural diplomacy by the US government towards Iran in order to achieve its own interests. History Iran and the United States began political relations in 1856, ...
*
Foreign relations of Iran Geography is an important factor in informing Iran's foreign policy. Following the 1979 Iranian Revolution, the newly formed Islamic Republic, under the leadership of Ayatollah Khomeini, dramatically reversed the pro-American foreign policy of ...


References

{{DEFAULTSORT:Iran, United States 2000s in international relations 2010s in international relations Iran–United States relations Presidency of Barack Obama
United States The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...
Bilateral relations of the United States