The Soviet Union and Japan sign a Joint Declaration, officially ending the state of war between the two countries that had existed since August 1945.

Soviet–Japanese Joint Declaration of 1956

1956 restoration of diplomatic relations between the USSR and Japan

The Soviet Union did not sign the 1951 Treaty of Peace with Japan, which had re‑established peaceful relations between most other Allied Powers and Japan. On 19 October 1956, Japan and the Soviet Union signed a Joint Declaration providing for the end of the state of war and for…