World Library  
Flag as Inappropriate
Email this Article

Soviet–Japanese Neutrality Pact


Soviet–Japanese Neutrality Pact

Soviet-Japanese Neutrality Pact, 13 April 1941.
Japanese Foreign Minister Matsuoka signing Soviet-Japanese Neutrality Pact

The Soviet–Japanese Neutrality Pact (日ソ中立条約 Nisso Chūritsu Jōyaku), also known as the Japanese–Soviet Non-aggression Pact (日ソ不可侵条約 Nisso Fukashin Jōyaku) was a pact between the Soviet Union and the Empire of Japan signed on April 13, 1941, two years after the brief Soviet–Japanese Border War (1939). The pact was signed to ensure the neutrality between the Soviet Union and the Empire of Japan during World War II, in which both countries participated.


  • Background and history 1
  • Treaty 2
  • Declaration 3
  • Denunciation 4
  • Declaration of War 5
  • See also 6
  • References 7

Background and history

In 1941, with the defeat of France and the subsequent expansion of the Axis Powers, the Soviet Union wished to mend its diplomatic relations in the Far East in order to safeguard its eastern border and concentrate on the European theatre of war. On the other hand, Japan, bogged down in a seemingly interminable war with China and with diplomatic relations with the United States rapidly deteriorating, sought an accommodation with the Soviet Union that would improve its international standing and secure the northern frontier of Manchukuo against possible Soviet invasion.

Stalin was initially unaware of Hitler's briefing to his generals that an attack on the Soviet Union by Germany would enable Japan to challenge the United States overtly, that is because, if such an attack occurred the Soviet Union would be too preoccupied with fighting Germany, thus making Japan feel less threatened or cautious of any possible Soviet invasion of Manchukuo, allowing Japan to have enough provisions and capabilities to start a war with the United States. This treaty Stalin made would allow neither Japan nor the Soviet Union to have to fight in 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 Foreign Minister Yosuke Matsuoka off at the train station. This was symbolic of the importance Stalin attached to the treaty; it also provided him with the occasion – in the presence of the entire diplomatic corps – to invite negotiations with Germany while flaunting his increased bargaining power.[1]

The treaty[2] was signed in Moscow on April 13, 1941, by Foreign Minister Yosuke Matsuoka and Ambassador Yoshitsugu Tatekawa for Japan and Foreign Minister Vyacheslav Mikhailovich Molotov for the Soviet Union.

On the same day, the same people also signed a declaration regarding Mongolia and Manchuria.[3] The Soviet Union pledged to respect the territorial integrity and inviolability of Manchukuo, while Japan did the same for the Mongolian People's Republic.

Later, in 1941, Japan, as a signatory of the Tripartite Pact, considered denouncing the Soviet–Japanese Neutrality Pact, especially after Nazi Germany invaded the Soviet Union (Operation Barbarossa), but made the crucial decision to keep it and to expand southwards invading the European colonies in Southeast Asia instead.

On April 5, 1945 the Soviet Union denounced the pact, 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."[4] 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 go to war with Japan soon.[5] However, the text of the treaty clearly stated that the pact remained in force until April 1946. When pressed by the Japanese Ambassador Naotake Sato, Molotov confirmed that the treaty did remain in force until April 1946.[6]

On August 9, 1945, just after midnight, the Soviet Union invaded Manchuria. The declaration of war followed nearly six hours later. Since the time zone difference of 7 hours, the declaration of war could be still dated August 8, 1945, being handed in Moscow at 11 p.m.[7]

The Soviet Union kept its promise to the Allies at the Yalta Conference to enter the war with Japan two to three months after the end of World War II in Europe, but it also acted in violation of the still valid neutrality pact signed on April 13, 1941.




Declaration of War

See also


  1. ^ Kissinger, Henry, "Diplomacy", page 365 and 366
  2. ^ a b Soviet-Japanese Neutrality Pact April 13, 1941. (Avalon Project at Yale University)
  3. ^ a b Declaration Regarding Mongolia April 13, 1941. (Avalon Project at Yale University)
  4. ^ a b Denunciation of the neutrality pact April 5, 1945. (Avalon Project at Yale University)
  5. ^ "So Sorry, Mr. Sato" in Time magazine, April 16, 1945
  6. ^ Tsuyoshi Hasegawa, Racing the Enemy: Stalin, Truman, and the Surrender of Japan, Harvard University Press, 2005, pp. 46-7.
  7. ^ Glantz, David M (2003). The Soviet Strategic Offensive in Manchuria, 1945: August Storm. p. 182.  
  8. ^ Soviet War Declaration On Japan August 8, 1945. (Avalon Project at Yale University)
  • Slavinsky, Boris (2003). The Japanese-Soviet Neutrality Pact -A Diplomatic History 1941-1945. Routledge.  
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Copyright © World Library Foundation. All rights reserved. eBooks from Hawaii eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.