Soviet–Japanese Neutrality Pact
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The , also known as the , was a
non-aggression pact A non-aggression pact or neutrality pact is a treaty between two or more states/countries that includes a promise by the signatories not to engage in military action against each other. Such treaties may be described by other names, such as a tr ...
between the
Soviet Union The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, it was nominally a federal union of fifteen national ...
and the
Empire of Japan The also known as the Japanese Empire or Imperial Japan, was a historical nation-state and great power that existed from the Meiji Restoration in 1868 until the enactment of the post-World War II 1947 constitution and subsequent fo ...
signed on April 13, 1941, two years after the conclusion of the Soviet-Japanese Border War. The agreement meant that for most of
World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposin ...
, the two nations fought against each other's allies but not against each other. In 1945, late in the war, the Soviets scrapped the pact and joined the
Allied An alliance is a relationship among people, groups, or states that have joined together for mutual benefit or to achieve some common purpose, whether or not explicit agreement has been worked out among them. Members of an alliance are called ...
campaign against Japan.


Background

After the Fall of France and then the expansion of the
Axis Powers The Axis powers, ; it, Potenze dell'Asse ; ja, 枢軸国 ''Sūjikukoku'', group=nb originally called the Rome–Berlin Axis, was a military coalition that initiated World War II and fought against the Allies. Its principal members were ...
, the
Soviet Union The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, it was nominally a federal union of fifteen national ...
wished to mend its diplomatic relations in the
Far East The ''Far East'' was a European term to refer to the geographical regions that includes East and Southeast Asia as well as the Russian Far East to a lesser extent. South Asia is sometimes also included for economic and cultural reasons. The ter ...
to safeguard its eastern border and to concentrate on the
European Theatre of World War II The European theatre of World War II was one of the two main Theater (warfare), theatres of combat during World War II. It saw heavy fighting across Europe for almost six years, starting with Nazi Germany, Germany's invasion of Poland on 1 Sept ...
. On the other hand, the
Empire of Japan The also known as the Japanese Empire or Imperial Japan, was a historical nation-state and great power that existed from the Meiji Restoration in 1868 until the enactment of the post-World War II 1947 constitution and subsequent fo ...
was bogged down in a seemingly-interminable war against China and had rapidly-deteriorating diplomatic relations with the
United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...
. Those factors made the Japanese seek an accommodation with the Soviet Union to improve its international standing and to secure the northern border of
Manchukuo Manchukuo, officially the State of Manchuria prior to 1934 and the Empire of (Great) Manchuria after 1934, was a puppet state of the Empire of Japan in Northeast China, Manchuria from 1932 until 1945. It was founded as a republic in 1932 afte ...
from a possible Soviet invasion. Soviet Premier
Joseph Stalin Joseph Vissarionovich Stalin (born Ioseb Besarionis dze Jughashvili; – 5 March 1953) was a Georgian revolutionary and Soviet political leader who led the Soviet Union from 1924 until his death in 1953. He held power as General Secretar ...
was initially unaware of
Adolf Hitler Adolf Hitler (; 20 April 188930 April 1945) was an Austrian-born German politician who was dictator of Nazi Germany, Germany from 1933 until Death of Adolf Hitler, his death in 1945. Adolf Hitler's rise to power, He rose to power as the le ...
's briefing to his generals that an attack on the Soviet Union by the European Axis Powers would let Japan overtly challenge the United States. That briefing was based on the belief that if such an attack occurred, the Soviet Union would be too preoccupied with fighting
Nazi Germany Nazi Germany (lit. "National Socialist State"), ' (lit. "Nazi State") for short; also ' (lit. "National Socialist Germany") (officially known as the German Reich from 1933 until 1943, and the Greater German Reich from 1943 to 1945) was ...
. That would make Japan feel less threatened by any possible Soviet invasion of Manchukuo and allow Japan to have enough provisions and capabilities to start a war against the United States. The pact would allow both Japan and the Soviet Union to avoid fighting on multiple fronts. Stalin believed that his "problems can be solved in a natural way if the Soviets and the Japanese cooperate". After concluding the nonaggression treaty, Stalin, in an unprecedented gesture, saw
Japanese Foreign Minister The is a member of the cabinet of Japan and is the leader and chief executive of the Ministry of Foreign Affairs. The minister is responsible for implementing Japan’s foreign policy and is also a statutory member of the National Security Cou ...
Yosuke Matsuoka off at the train station. That was symbolic of the importance that Stalin, who rarely appeared before foreign diplomats, attached to the treaty. It also provided him with the occasion, in the presence of the entire diplomatic corps, to invite negotiations with Germany and to flaunt his increased bargaining power.


Signing

The treaty was signed in
Moscow Moscow ( , US chiefly ; rus, links=no, Москва, r=Moskva, p=mɐskˈva, a=Москва.ogg) is the capital and largest city of Russia. The city stands on the Moskva River in Central Russia, with a population estimated at 13.0 million ...
on April 13, 1941, by Foreign Minister Yosuke Matsuoka and Ambassador
Yoshitsugu Tatekawa was a lieutenant-general in the Imperial Japanese Army in World War II. He played an important role in the Mukden Incident in 1931 and as Japanese ambassador to the Soviet Union he negotiated the Soviet–Japanese Neutrality Pact in 1941. Biograp ...
for Japan and Foreign Minister
Vyacheslav Molotov Vyacheslav Mikhaylovich Molotov. ; (;. 9 March Old_Style_and_New_Style_dates">O._S._25_February.html" ;"title="Old_Style_and_New_Style_dates.html" ;"title="nowiki/>Old Style and New Style dates">O. S. 25 February">Old_Style_and_New_Style_dat ...
for the Soviet Union. The same day, all three men also signed a declaration regarding
Mongolia Mongolia; Mongolian script: , , ; lit. "Mongol Nation" or "State of Mongolia" () is a landlocked country in East Asia, bordered by Russia to the north and China to the south. It covers an area of , with a population of just 3.3 million, ...
and
Manchukuo Manchukuo, officially the State of Manchuria prior to 1934 and the Empire of (Great) Manchuria after 1934, was a puppet state of the Empire of Japan in Northeast China, Manchuria from 1932 until 1945. It was founded as a republic in 1932 afte ...
.Declaration Regarding Mongolia
April 13, 1941. (
Avalon Project The Avalon Project is a digital library of documents relating to law, history and diplomacy. The project is part of the Yale Law School Lillian Goldman Law Library. The project contains online electronic copies of documents dating back to the be ...
at
Yale University Yale University is a private research university in New Haven, Connecticut. Established in 1701 as the Collegiate School, it is the third-oldest institution of higher education in the United States and among the most prestigious in the wo ...
)
The Soviet Union pledged to respect the territorial integrity and the inviolability of Manchukuo, and Japan did the same for Mongolia.


Effects

Later in 1941, Japan, as a signatory of the
Tripartite Pact The Tripartite Pact, also known as the Berlin Pact, was an agreement between Germany, Italy, and Japan signed in Berlin on 27 September 1940 by, respectively, Joachim von Ribbentrop, Galeazzo Ciano and Saburō Kurusu. It was a defensive milit ...
, considered denouncing the Soviet–Japanese Neutrality Pact, especially after the
German invasion of the Soviet Union Operation Barbarossa (german: link=no, Unternehmen Barbarossa; ) was the invasion of the Soviet Union by Nazi Germany and many of its Axis allies, starting on Sunday, 22 June 1941, during the Second World War. The operation, code-named afte ...
, but it made the crucial decision to keep the pact and to expand southwards by instead invading the European colonies in
Southeast Asia Southeast Asia, also spelled South East Asia and South-East Asia, and also known as Southeastern Asia, South-eastern Asia or SEA, is the geographical United Nations geoscheme for Asia#South-eastern Asia, south-eastern region of Asia, consistin ...
. That had a direct bearing on the Battle of Moscow since the absence of a Japanese threat allowed the Soviets to move large forces from
Siberia Siberia ( ; rus, Сибирь, r=Sibir', p=sʲɪˈbʲirʲ, a=Ru-Сибирь.ogg) is an extensive geographical region, constituting all of North Asia, from the Ural Mountains in the west to the Pacific Ocean in the east. It has been a part of ...
and to send them to the front against the Germans. It is possible that if the Germans had won the Battle of Stalingrad, Japan would have invaded Siberia. General Tomoyuki Yamashita, who was known for his achievements in the
Battle of Singapore The Fall of Singapore, also known as the Battle of Singapore,; ta, சிங்கப்பூரின் வீழ்ச்சி; ja, シンガポールの戦い took place in the South–East Asian theatre of the Pacific War. The Empire of ...
, was sent to Manchuria in July 1942 and tasked with organizing troops for the invasion. At the
Yalta Conference The Yalta Conference (codenamed Argonaut), also known as the Crimea Conference, held 4–11 February 1945, was the World War II meeting of the heads of government of the United States, the United Kingdom, and the Soviet Union to discuss the post ...
in February 1945, Stalin secretly agreed to enter the war against Japan in exchange for American and British recognition of certain Soviet territorial claims in Asia. The Soviet offensive was to start within three months after the end of the war in Europe.


Soviet denunciation

On April 5, 1945, the Soviet Union denounced the pact with Japan by informing the Japanese government that "in accordance with Article Three of the above mentioned pact, which envisaged the right of denunciation one year before the lapse of the five-year period of operation of the pact, the Soviet Government hereby makes known to the Government of Japan its wish to denounce the pact of April 13, 1941."Denunciation of the neutrality pact
April 5, 1945. (
Avalon Project The Avalon Project is a digital library of documents relating to law, history and diplomacy. The project is part of the Yale Law School Lillian Goldman Law Library. The project contains online electronic copies of documents dating back to the be ...
at
Yale University Yale University is a private research university in New Haven, Connecticut. Established in 1701 as the Collegiate School, it is the third-oldest institution of higher education in the United States and among the most prestigious in the wo ...
)
The wording of the denunciation suggested that the Soviet Union wished to see the treaty go out of effect immediately, and ''Time'' magazine reported that the Soviet Foreign Commissar's tone indicated that the Soviet Union might soon go to war against Japan. The text of the treaty had stated that the pact remained "valid for five years," (April 13, 1941 - April 13, 1946). When Japanese Ambassador
Naotake Sato Naotake (written: 直剛, 尚武 or 尚丈) is a masculine Japanese given name. Notable people with the name include: *, Japanese anime producer *, Japanese footballer *, Japanese diplomat and politician {{given name Japanese masculine given n ...
pressed him, Molotov assured him that the treaty would remain in force until April 1946. The treaty also stated, "In case neither of the Contracting Parties denounces the Pact one year before the expiration of the term, it will be considered automatically prolonged for the next five years" (April 13, 1946 - April 13, 1951). The denunciation came on April 5, 1945, which under those terms meant that the treaty would not renew on April 13, 1946. On May 8 or 9, 1945, the date depending on the time zone, Nazi Germany surrendered, which ended the war in Europe and started the secret three-month countdown for the Soviets to start hostilities against Japan. On August 9, 1945, just after midnight in Manchuria, the Soviets invaded Manchuria. The declaration of war against Japan followed nearly six hours later. Because of the time zone difference of 7 hours, the declaration of war could be still dated August 8, 1945 and was presented to the Japanese ambassador in Moscow at 11 p.m. Moscow time. During the Soviet invasion, Japanese forces on the Asian mainland were unprepared to resist and were overrun relatively quickly. In the last campaign of the war, Soviet territorial gains in Asia were Manchukuo,
Mengjiang Mengjiang, also known as Mengkiang or the Mongol Border Land, and governed as the Mengjiang United Autonomous Government, was an autonomous area in Inner Mongolia, formed in 1939 as a puppet state of the Empire of Japan, then from 1940 being ...
(Inner Mongolia) and northern
Korea Korea ( ko, 한국, or , ) is a peninsular region in East Asia. Since 1945, it has been divided at or near the 38th parallel, with North Korea (Democratic People's Republic of Korea) comprising its northern half and South Korea (Republic o ...
.


Text of pact


Text of declaration


Text of denunciation


Text of declaration of war


See also

*
Japan–Soviet Union relations Relations between the Soviet Union and Japan between the Communist takeover in 1917 and the collapse of Communism in 1991 tended to be hostile. Japan had sent troops to counter the Bolshevik presence in Russia's Far East during the Russian Civil ...
*
Molotov–Ribbentrop Pact The Molotov–Ribbentrop Pact was a non-aggression pact between Nazi Germany and the Soviet Union that enabled those powers to partition Poland between them. The pact was signed in Moscow on 23 August 1939 by German Foreign Minister Joachim von Ri ...
*
Italo-Soviet Pact The Pact of Friendship, Neutrality, and Nonaggression between Italy and the Soviet Union, also known as the Italo-Soviet Pact, was a nonaggression pact between the Soviet Union and Italy. Signed on 2 September 1933,. the agreement was in place un ...
*
Potsdam Conference The Potsdam Conference (german: Potsdamer Konferenz) was held at Potsdam in the Soviet occupation zone from July 17 to August 2, 1945, to allow the three leading Allies to plan the postwar peace, while avoiding the mistakes of the Paris Pe ...
,
Potsdam Declaration The Potsdam Declaration, or the Proclamation Defining Terms for Japanese Surrender, was a statement that called for the surrender of all Japanese armed forces during World War II. On July 26, 1945, United States President Harry S. Truman, Uni ...


References

* {{DEFAULTSORT:Soviet-Japanese Neutrality Pact Military history of Japan during World War II Treaties of the Soviet Union World War II treaties Soviet Union in World War II Mongolian People's Republic History of Manchuria Germany–Soviet Union relations Treaties concluded in 1941 Treaties entered into force in 1941 1941 in Japan 1941 in the Soviet Union Japan–Russia relations Japan–Soviet Union relations Treaties of the Empire of Japan Non-aggression pacts April 1941 events 1941 in Moscow Axis powers Japan–Russia treaties