Background
Previous U.S. involvement
In 2003, the United States led a controversialOld enemies
After the invasion, the previous incarnations of ISIL (ISIL advances in Northern Iraq
{{main, Iraq#2008–2018: Instability and ISIS, Iraqi insurgency (2011–2013), 2012 in Iraq, 2013 in Iraq, Northern Iraq offensive (June 2014) After the December 2011 withdrawal of U.S. troops from Iraq, violent insurgency of mainlyInternet beheading video campaign 2014–2015
{{main, Islamic State beheading incidents On 12 August 2014, ISIL started a campaign of beheading Western and Japanese civilian hostages (announced 12 August,{{cite news , title =Jihadists sent chilling email to Foley family before execution , url =http://www.bignewsnetwork.com/index.php/sid/225005187, date=22 August 2014, access-date=20 October 2014, work=Big News Network James Foley 19 August,U.S.-led coalition against ISIL
{{Main, International military intervention against ISIL#U.S.-led intervention in Iraq {{Further, International Conferences on Peace and Security in Iraq (2014), Spillover of the Syrian Civil War On 5 September, 15 September and 3 December 2014, different sets of countries came together to discuss concerted action against ISIL. Present at all three meetings were the United States, United Kingdom, France, Germany, Italy, Canada, Turkey, and Denmark. The coalition of 5 September (10 countries) decided to support anti-ISIL forces in Iraq and Syria.'U.S. Forms Anti-ISIS Coalition at NATO Summit'U.S. naming controversy
{{main, Operation Inherent Resolve Unlike previous U.S. combat operations, no name was initially given to the 2014 military operation in Iraq and Syria by the U.S. government, until mid-October. The fact that the operation was still nameless drew considerable media criticism. U.S. soldiers remained ineligible for Campaign Medals and other service decorations due to the continuing ambiguous nature of the U.S. involvement in Iraq. On 15 October 2014, two months after the first airstrikes by the U.S., the operation was named ''Inherent Resolve''.Support of the Iraqi government
After the United States in June 2014 started to send troops to Iraq to secure American interests and assets and advise the Iraqi forces (see section U.S. surveillance and military advising in Iraq), PresidentBuilding Partner Capacity
Military aid to the Kurds
U.S. troop presence
While some U.S. troops were already active in Iraq for several purposes since June 2014 (see section Background), on 13 August, the U.S. deployed another 130 military advisers to Northern Iraq, and up to 20 U.S. Marines and special forces servicemen landed onAir operations
Types of aircraft used
In the first U.S. airstrikes on 8 August, armed drones as well as fixed wing aircraft:Air bases and aircraft carriers
The following is a list of publicly disclosed air bases that have been used for the interventions in Iraq and Syria. It is likely that there are other, yet undisclosed air bases being used.Airstrikes
* {{flagicon, USA The United States began conducting airstrikes in Iraq on 8 August 2014. Fighter aircraft from theFacilitating or preparing for airstrikes
* {{flagicon, Greece Greece has served as a staging point for Belgian F-16s participating in airstrikes against ISIS. * {{flagicon, Italy Italy has offered to assist coalition partners inAirstrike campaigns in co-operation with other countries
* {{flagicon, Belgium Belgium decided on 26 September 2014 that it would send sixTimeline
U.S. surveillance and military advising in Iraq
ISIL conquests and massacres; U.S. reaction
{{main, Northern Iraq offensive (August 2014) {{further, Sinjar massacre, Genocide of Yazidis by ISIL {{see also, #Humanitarian efforts During the first 15 days of August 2014, ISIL expanded its territories in northern Iraq. On 3 August, they conqueredObama's decision for airstrikes
On the evening of 7 August 2014, U.S. President...the world is confronted by many challenges. And while America has never been able to right every wrong, America has made the world a more secure and prosperous place. And our leadership is necessary to underwrite the global security and prosperity that our children and our grandchildren will depend upon. We do so by adhering to a set of core principles. We do whatever is necessary to protect our people. We support our allies when they're in danger. We lead coalitions of countries to uphold international norms. And we strive to stay true to the fundamental values -- the desire to live with basic freedom and dignity -- that is common to human beings wherever they are. That's why people all over the world look to the United States of America to lead. And that's why we do it.The U.S. also started considering an operation with American ground troops to rescue the Yazidis in those
First U.S. airstrikes in the Erbil and Sinjar areas
{{Further, Sinjar massacre#Refugee crisis in the Sinjar Mountains On Friday, 8 August 2014,Retaking Mosul Dam
{{further, Battle for Mosul Dam On 16 August, U.S. drones and warplanes began a close air campaign aimed at supporting the advance of Kurdish fighters moving toward the Mosul Dam. Kurdish sources commented that this was the "heaviest U.S. bombing of militant positions since the start of air strikes."{{cite web, url=https://www.bbc.com/news/world-middle-east-28820509, title=Iraq crisis: US strikes aid Kurdish bid to retake dam, work=BBC, date=16 August 2014, access-date=18 August 2014{{cite web, url=https://www.bbc.com/news/world-middle-east-28833519, title=Iraq crisis: Mosul dam recaptured from militants – Obama, work=BBC, date=18 August 2014, access-date=18 August 2014 On 16 August there were 9 U.S. airstrikes in northern Iraq, on 17 August 2014. U.S. President Obama, in a letter to Congress on 17 August, explained this use of U.S. Forces as support to the Iraqi forces' campaign against terrorist group ISIL. Obama said on 18 August that Kurdish Peshmerga fighters and Iraqi troops, with help from the U.S., had retaken the Mosul Dam from ISIL.Timeline
2014
= September 2014
== October 2014
= On 3 October 2014, the= November 2014
= {{See also, #Airstrikes Late November 2014,= December 2014
= During the early morning hours of 14 December, U.S. ground forces allegedly clashed with2015
= January 2015
= In mid-January 2015,= February 2015
== March 2015
= At the beginning of March, the Iraqi government announced that they would soon launch a military operation with the Kurdish= April 2015
= On 8 April 2015, Iraqi forces, building on their advances in the Saladin Governorate, launched an offensive to liberate the= May 2015
= On 3 May 2015, ''= August 2015
= {{Main, CENTCOM analyst allegations In August 2015, fifty= October 2015
= On 17 October 2015, an MQ-1B Predator drone from 20th Attack Squadron,2016
= January 2016
= The US-led coalition began targeting the IS= February 2016
= US officials reported that= March 2016
= On 1 March 2016, a U.S. special operations assault force captured an ISIL operative during a raid in northern Iraq and is expected to apprehend and interrogate a number of others in coming months. On 19 March, Staff Sergeant Louis F. Cardin, a field artilleryman with the Battalion Landing Team,= April 2016
= On 18 April 2016, U.S. Special forces and Kurdish forces launched a raid on Hammam al-'Alil which killed Salman Abu Shabib al-Jebouri; a senior IS commander who was a leading member of the IS military council, two of his aides were also killed. U.S. Defence Secretary= May 2016
= On 3 May 2016, Special Warfare Operator 1st Class Charles Keating IV; a U.S. Navy SEAL, was killed by small arms fire during an ISIL assault on a Peshmerga position, approximately 3 to 5 kilometers behind enemy lines, near the town of Tel Skuf, 28–30 km north of Mosul, the SEAL killed was part of a 30-man SEALs unit deployed to Iraq as part of a special forces advise and assist mission. 125 ISIL militants broke into the position using three truck bombs followed by bulldozers which cleared the wreckage away, the U.S. responded with 11 aircraft; F-15s F-16s, A-10s, B-52s and 2 drones carrying out 31 airstrikes; which destroyed two more truck bombs stopping the attack, 58 militants were killed and more than 20 of their vehicles were also destroyed, Keating was part of a Navy SEAL= June 2016
= On 12 June, a U.S. Apache attack helicopter carried out a strike that destroyed an ISIL car bomb near Qayyarah, 50 miles south of Mosul in support of Iraqi forces positioning ahead of an operation to retake Mosul from insurgents. It was the first time since President Obama authorized the helicopters' use in offensive operations earlier this year. On 25 June, a U.S. airstrike near Mosul killed 2 senior ISIL commanders: one was Basim Muhammad Ahmad Sultan al-Bajari, ISIL' deputy minister of war, who oversaw ISIS' efforts to capture Mosul in June 2014 and consolidated ISIL's control over Mosul, he also led the ISIL Jaysh al-Dabiq battalion known for using vehicle-borne IEDs, suicide bombers and mustard gas in its attacks. The other was Hatim Talib al-Hamduni, a military commander in the area and head of military police for self-proclaimed Ninawa state; together, they engaged in dictatorial rule and sectarian murder and oppression since 2014. On 29 June, in support of the 2016 Abu Kamal offensive—the offensive by the Syrian rebels from different factions that aims to capture= July 2016
= On 11 July, Secretary of Defense Ash Carter announced that the U.S. is sending 560 additional U.S. military personnel to Iraq, bringing the number of U.S. personnel in Iraq to about 4,650. They will be stationed at Qayyara airbase, which was recaptured on 9 July by Iraqi government forces being supported by U.S.-led airstrikes; most of them will serve in training and advisory roles, including engineers and logistics experts and with the airbase as a key staging area, they will assist local forces in the retaking of the IS stronghold of Mosul. Also, a new "Nineveh Liberation Operations Center" has been set up to coordinate the offensive, complete with dozens of U.S. and British advisers.= August 2016
= On 5 August, the Pentagon announced about 400 U.S. soldiers would deploy south of Mosul to Qayarah airbase to aid in the operation to retake Mosul.= September 2016
= On 28 September, ''The New York Times'' reported that U.S. officials said President Obama had authorized the sending of an additional 600 U.S. troops to Iraq to assist Iraqi forces in the upcoming battle to retake Mosul from IS.= October 2016
== November 2016
= On 1 November, ''Stars and Stripes'' reported that U.S. special operators were at the front line on the edge of Mosul – just outside the village of Gogjali, with elite Iraqi troops from the U.S.-trained Golden Division who were preparing to enter Mosul. The Americans wore black uniforms and drove black armoured vehicles to blend in with their Iraqi counterparts, U.S. special operators near Gogjali set up a mortar, unloaded a bazooka-style weapon and watched nearby fighting from a farmhouse roof; At around midday a drone the Americans had launched earlier stalled and crashed beside the farmhouse, breaking its wings and propeller. An Iraqi general told The Associated Press that later that day, Iraq's special forces entered the outskirts of Mosul, taking the state television building and advancing to the borders of Karama district despite fierce resistance by IS fighters. The Associated Press reported that as the sun went down, a sandstorm blew in, reducing visibility to only 100 yards and bringing the day's combat to an end, the AP reported. Meanwhile, U.S. Army engineers from the 101st Airborne Division also pushed closer to Mosul, searching for improvised bombs just west of the Great Zab River.= December 2016
= On 4 December, a coalition airstrike in Mosul killed Falah al-Rashidi, an ISIL leader who was involved in ISIL's use of vehicle bombs in Mosul, a spokesman for CJTF–OIR, Colonel John Dorrian said "His removal further degrades ISIL's ehicle bombthreat, which has been the enemy's weapon of choice for attacking Iraqi security forces and civilians." Also that day Abu Turq was killed in Sharqat, Dorrian said "he was killed in an airstrike while fighting from a rooftop position in Sharqat, where he and several other fighters were moving a heavy weapon to fire upon partner forces. His removal increases pressure on the ISIL financial network, which is already severely disrupted by several hundred strikes on oil infrastructure and bulk cache sites."{{cite web, last=Cronk, first=Terry Moon, url=https://www.defense.gov/News/Article/Article/1041949/us-led-coalition-airstrikes-eliminate-key-isil-leaders-in-syria-iraq, title=U.S.-Led Coalition Airstrikes Eliminate Key ISIL Leaders in Syria, Iraq, publisher=Department of Defence, date=4 January 2017 {{PD-notice On 21 December, an airstrike in Qaim killed Ahmad Abdullah Hamad al-Mahalawi, al-Mahalawi was ISIL senior in Qaim, Colonel John Dorrian a spokesman for CJTF–OIR said "His removal will disrupt ISIL's ability to conduct operations along the Euphrates River Valley."2017
= January 2017
= On 27 January ''Sky News'' reported that French special forces in Mosul discovered a warehouse and unloading area near the Tigris River where dozens of missiles were stored alongside makeshift launchers with Russian markings. The weapons are thought to have come from Syria, most were designed to be fired by jets but one was a 10 ft-long missile- beneath the cover of trees IS fighters had been working on building a Scud missile. Near the preparation site, three large refrigerated cargo carriers had been opened and were full of coking coal but buried inside, Iraqi soldiers found containers with an unidentified substance inside, the area smelt strongly of chemicals, French soldiers advised the Iraqi team that the whole area was contaminated; tests are now being carried out on what senior commanders called "poison". Iraqi special forces say IS were planning to launch long and short-range missiles tipped with chemical or biological war heads from western Mosul; Brigadier Ali of the Counter Terrorism Service, in charge of the weapons discovery, said he believed the production of the chemical weapons had been halted by the start of the offensive on Mosul and the targeting of IS fighters by coalition planes and drones. Later, ''The Guardian'' reported that Brigadier General Haider Fadhil from Iraqi special forces said French officials tested the chemical and confirmed it was a mustard agent.= February 2017
= On 11 February, the ''Telegraph'' reported that Iraqi aircraft carried out an airstrike on a house in Anbar where ISIL leader Abu Bakr al-Baghdadi was holding a meeting with senior ISIS commanders, killing more than a dozen.= March 2017
= On 17 March, a U.S.-led coalition airstrike in Mosul killed more than 200 civilians. On 27 March, it was reported that 300 paratroopers from the= April 2017
= On 1 April, ''Military.com'' reported that Iraqi fighter jets carried out airstrikes on IS militants-who had crossed over the border from Syria-in the town of Baaj near the Syrian border, killing between 150 and 200 militants. Reuters reported that Iraqi State TV said that, citing Iraq's military intelligence, an air strike in the region of al-Qaim killed Ayad al-Jumaili, who was believed to be the "second-in-command" of ISIL. On 29 April, ''Army Times'' reported that First Lieutenant Weston Lee of 1st Battalion, 325th Infantry Regiment, 2nd Brigade Combat Team, 82nd Airborne Division died from wounds received from the detonation of an IED during a patrol outside Mosul.= August 2017
= On 13 August, ''Stars and Stripes'' reported that 2 U.S. Soldiers of 2nd Battalion,= October 2017
= On 1 October, Specialist Alexander W. Missildine of the 710th Brigade Support Battalion, 3rd Brigade Combat Team, 10th Mountain Division, was killed by an EFP (a type of improvised explosive that was first used by insurgents supplied by Iran with the help of Hezbollah for use against armored vehicles during the Iraq War) whilst traveling on a major road in Saladin Governorate or Nineveh Governorate, another soldier was wounded. ''The Washington Post'' reported that the device had not been used in Iraq for six years and that ISIL did not make any public claim of responsibility after the attack, but that it did coincide with threats from some of the Iranian-backed Shia militias who fought with the U.S. against the ISIL but now want U.S. forces to leave the country now that ISIL is almost defeated. According to Greg Robin, an expert in explosive devices for the Sahan Research Group, the bomb has been used in Afghanistan, by al-Shabaab in Somalia and= December 2017
= {{Further, Islamic State insurgency in Iraq (2017–present) On 9 December 2017, it is reported that ISIL had lost all strategic territory in Iraq. On 22 December, Australian Defense Minister2018
= February 2018
= The U.S. announced that it would begin to reduce its troop levels in Iraq.= July 2018
= As of 2 July 2018, the U.S. still maintains a military presence of 5,000 troops stationed in Iraq with the task of helping train and assist Iraqi forces.{{cite web , url=http://wesa.fm/post/along-iraq-syria-border-us-troops-focus-defeating-isis#stream/0 , title=Along the Iraq-Syria Border, U.S. Troops Focus on Defeating ISIS , date=2 July 2018= October 2018
= On 4 October 2018, an operation against ISIL was started by the Iraqi military along with the military forces of= December 2018
= On 15 December 2018, A U.S. airstrike from a2019
2020
= January 2020
=Baghdad International Airport drone strike {{Main, Assassination of Qasem Soleimani On 3 January 2020, United States forces carried out a missile strike that hit a convoy near
Iranian ballistic missile attack {{Main, Operation Martyr Soleimani On 8 January 2020, Iran's
= February 2020
= {{Further, Withdrawal of United States troops from Iraq (2020–2021)Demand of U.S. troop withdrawal from military bases in Iraq On 10 February,
= March 2020
= {{see also, 2020 Camp Taji attacks On 9 March, the Pentagon released a statement claiming that two American Marines were killed during an anti-ISIS operation in a mountainous area of north central Iraq. Col. Myles B. Caggins III, a spokesman for the OIR coalition, later identified the Marines, who were also MARSOC Raiders, and that they died during an operation which also claimed the lives of four ISIS fighters during an American-led operation which involved clearing an ISIS cave complex in the Makhmur Mountains, south of Erbil. On 11 March, two Americans{{cite news , url=https://time.com/5801472/troops-killed-iraq/, title=At Least 2 U.S. Troops Killed in Iraq Attack: Officials, access-date=11 March 2020 , date=11 March 2020 , newspaper== April 2020
= On 7 April, the International Coalition withdrew from the Abu Ghraib operating base, the al-Sqoor base inside Nineveh operation command and the= June–July 2020
= In June 2020, coalition aircraft destroyed three ISIL camps in northern Iraq. In early July 2020, a2021
{{Expand section, date=January 2022= January 2021
= On 27 January 2021, during a joint operation led by the= December 2021
= The U.S. formally concluded its combat mission in Iraq on 9 December 2021, leaving the 2,500 troops remaining in the country to serve as trainers and advisors to theHumanitarian efforts
{{see also, Genocide of Yazidis by ISIL, Sinjar massacre The United States and international partners have undertaken a large humanitarian effort to support refugees stranded in northern Iraq with airdropped supplies. On 7 August, twoCasualties
{{Update section, date=December 2021Civilians
{{See also, 2017 Mosul airstrike According toISIL fighters
On 9 August, U.S. airstrikes killed 16 ISIL fighters, Iraqi officials reported. Between 9–11 August, in a concerted U.S.-Iraqi operation, an Iraqi airstrike killed 45 ISIL men. On 8 September, in an operation of Iraqi forces with U.S. airstrikes, Iraq reported that 15 ISIL fighters were killed. On 23 February 2015, it was revealed that over 8,500 ISIL fighters had been killed by US-led airstrikes, with at least 7,000 of the deaths in Iraq.{{cite web, url=http://www.worldbulletin.net/middle-east/155536/airstrikes-kill-8500-isil-fighters-says-us-general, archive-url=https://web.archive.org/web/20150223225100/http://www.worldbulletin.net/middle-east/155536/airstrikes-kill-8500-isil-fighters-says-us-general, url-status=usurped, archive-date=23 February 2015, title= Airstrikes 'kill 8,500' ISIL fighters says U.S. general , date= 23 February 2015, work=World Bulletin{{cite web, url=http://www.aljazeera.com/news/2015/02/led-air-strikes-syria-isil-targets-kill-1600-150223095226393.html, title=US-led air strikes on Syria ISIL targets 'kill 1,600', work=Al-Jazeera, date=23 February 2014, access-date=23 February 2014 By early June 2015, ISIL had lost over 13,000 fighters to Coalition airstrikes in Iraq and Syria, with 10,800+ of the deaths in Iraq.{{cite web, url=http://www.cnn.com/2015/05/28/middleeast/isis-how-to-stop-it/, title=Why ISIS is winning, and how its foes can reverse it , first=Tim, last=Lister, date=28 May 2015, publisher=CNN, access-date=8 August 2015{{cite web, url=http://www.syriahr.com/en/2015/05/u-s-led-coalition-airstrikes-on-syria-kill-more-than-2500-in-the-past-8-months/, title=U.S led coalition airstrikes on Syria kill more than 2500 in the past 8 months, work=SOHR, date=23 May 2015, access-date=23 May 2015 By July 2015, ISIL had lost over 15,000 fighters to US-led Coalition airstrikes in Iraq and Syria, with 12,100+ fighters killed in Iraq.{{cite web, url=https://www.usatoday.com/story/news/world/2015/07/29/air-campaign-kills-15000-isis-militants-pentagon-iraq-syria/30750327/, title=Islamic State recruiting offsets 15,000 killed by airstrikes in past year, first=Jim, last=Michaels, date=29 July 2015, work=USA Today, access-date=30 July 2015, quote=The U.S.-led coalition confirmed the 15,000 casualty number but would not discuss it publicly.{{cite web, url=http://www.syriahr.com/en/2015/06/about-3000-people-including-162-civilians-killed-in-us-coalition-airstrikes-on-areas-in-syria/, title=About 3000 people, including 162 civilians, killed in US- coalition airstrikes on areas in Syria, publisher=Syrian Observatory of Human Rights, date=23 June 2015, access-date=23 June 2015Peshmerga troops
"At least 999 Peshmerga troops lost their lives and 4,596 have been injured between June 10, 2014 and February 3, 2015," said Jabbar Yawar, secretary-general of the Ministry of Peshmerga Affairs to reporters at a press conference in Arbil on 4 February 2015. In late February 2015, it was revealed that the Peshmerga losses had increased to over 1,000 dead, and over 5,000 wounded.{{cite web, url=https://www.buzzfeed.com/mikegiglio/kurdish-forces-show-the-strain-of-isis-fight#.kbK7dBlaPj, title=Kurdish Forces Show The Strain Of The ISIS Fight, work=BuzzFeed, date=20 February 2015 , access-date=8 August 2015U.S. soldiers
TheReactions
The initial decision to intervene in Iraq was met with bipartisan support in theAftermath
{{See also, Islamic State insurgency in Iraq (2017–present) Although the Presidency of Joe Biden, Biden administration ended the U.S. combat mission against the Islamic State in December 2021 and shifted remaining forces towards a training and advisory role—a largely formal decision as U.S. troops had already been training and assisting Iraqi forces for years—the Pentagon said troops remained in a "hazardous environment" and retained the ability to defend themselves, citing regional threats. "...We continue to see threats against our forces in Iraq and American-led intervention in the Syrian civil war, Syria by militia groups that are backed by Iran," said Pentagon spokesman John Kirby (admiral), John Kirby.{{cite news, url=https://www.defense.gov/News/News-Stories/Article/Article/2887673/us-troops-in-iraq-remain-at-risk-retain-right-of-self-defense-press-secretary-s/, title=U.S. Troops in Iraq Remain at Risk, Retain Right of Self-Defense, Press Secretary Says, date=4 January 2022, access-date=28 January 2022, work=United States Department of DefenseSee also
{{colbegin * Iraq#2008–present, History of Iraq * 2014 international conferences on Iraqi security * Spillover of the Syrian civil war * February 2015 Egyptian airstrikes in Libya * Opération Chammal – included French operation against ISIL *Notes
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