when did japan go to war with russia
8 February 1904
title: Soviet–Japanese War text: Soviet–Japanese War The Soviet–Japanese War (; , "soren tai nichi sansen" "Soviet Union entry into war against Japan") was a military conflict within the Second World War beginning soon after midnight on August 9, 1945, with the Soviet invasion of the Japanese puppet state of Manchukuo. The Soviets and Mongolians terminated Japanese control of Manchukuo, Mengjiang (Inner Mongolia), northern Korea, Karafuto, and the Chishima Islands (Kuril Islands). The defeat of Japan's Kwantung Army helped in the Japanese surrender and the termination of World War II. The Soviet entry into the war was a significant factor in the Japanese government's decision title: Soviet–Japanese War text: the Japanese army and navy under the direction of General Headquarters of the U.S. Far East Command. Soviet–Japanese War The Soviet–Japanese War (; , "soren tai nichi sansen" "Soviet Union entry into war against Japan") was a military conflict within the Second World War beginning soon after midnight on August 9, 1945, with the Soviet invasion of the Japanese puppet state of Manchukuo. The Soviets and Mongolians terminated Japanese control of Manchukuo, Mengjiang (Inner Mongolia), northern Korea, Karafuto, and the Chishima Islands (Kuril Islands). The defeat of Japan's Kwantung Army helped in the Japanese surrender and the termination of World title: Soviet–Japanese War text: well planned and enabled the Soviet Union to enter the Pacific Theater on the side of the Allies, as previously agreed, before the war's end. The second largest Japanese island of Hokkaido, originally planned by the Soviets to be part of the territory taken, was held off due to apprehension of the United States' new position as an atomic power. At 11 pm Trans-Baikal time on August 8, 1945, Soviet foreign minister Molotov informed Japanese ambassador Satō that the Soviet Union had declared war on Japan, and that from August 9 the Soviet Government would consider itself to be at title: Soviet invasion of Manchuria text: date of the German surrender some three months earlier; on August 3, Marshal Vasilevsky reported to Premier Joseph Stalin that, if necessary, he could attack on the morning of 5 August. At 11pm Trans-Baikal (UTC+10) time on 8 August 1945, Soviet foreign minister Vyacheslav Molotov informed Japanese ambassador Naotake Satō that the Soviet Union had declared war on Japan, and that from 9 August the Soviet government would consider itself to be at war with Japan. At one minute past midnight Trans-Baikal time on 9 August 1945, the Soviets commenced their invasion simultaneously on three fronts to the east, west title: Soviet–Japanese border conflicts text: to press into Southeast Asia instead. This was said to be largely due to the Battle of Khalkhin Gol. The defeat there caused Japan not to join forces with Germany against the Soviet Union, even though Japan and Germany were part of the Tripartite Pact. On April 5, 1945, the Soviet Union unilaterally denounced the neutrality pact, noting that it would not renew the treaty when it expired on April 13, 1945. Four months later, prior to the expiration of the neutrality pact, and between the atomic bombings of Hiroshima and Nagasaki, the Soviet Union declared war on Japan, completely