Japan–Russia relations (, Rossiysko-yaponskiye otnosheniya; , Nichiro kankei) or Japanese–Russian relations are the bilateral international relations between Japan and the Russian Federation. Relations between Russia and Japan are the continuation of the relationship of Japan with the Soviet Union from 1917 to 1991, and with the Russian Empire from 1855 to 1917. Historically, the two countries had cordial relations until a clash of territorial ambitions in the Manchuria region of northeastern China led to the Russo–Japanese War in 1904, ending in a Japanese victory which contributed to the weakening of the monarchy in Russia. Japan would later intervene in the Russian Civil War from 1918 until 1922, sending troops to the Russian Far East and Siberia. That was followed by border conflicts between the new Soviet Union and the Empire of Japan throughout the 1930s. The two countries signed a nonaggression pact in 1941, although the Soviet government declared war on Japan anyway in August 1945, invading the Japanese puppet state of Manchukuo as well as seizing the Kuril chain of islands just north of Japan. The two countries ended their formal state of war with the Soviet–Japanese Joint Declaration of 1956, but as of 2022 have not resolved this territorial dispute over ownership of the Kurils. A 2018 opinion poll published by the Russian Levada Center shows that 61% of Russians have a favorable view of Japan, with 20% expressing a negative opinion. According to a 2017 Pew Global Attitudes Project survey, 64% of Japanese people view Russia unfavorably, compared with 26% who viewed it favorably. People ages 50 and older are much less likely to hold a favorable view of Russia (16%) than those 18 to 29 (53%). Nonetheless, the Japanese government sees Russia as an important partner for security and counterbalancing China and North Korea in the region. Because of this, since the start of Euromaidan and the 2014 annexation of Crimea, Japan continued to engage with Russia in spite of sanctions against the country by Japan's Western allies. The governments of the two countries have taken efforts to increase relations, including Japanese investment in Russia, military cooperation, and organizing a year of cultural exchange between Russia and Japan for 2018. In 2022, Japan imposed sanctions on Russia for its invasion of Ukraine. Japan and Russia each expelled a number of diplomats and Russia halted peace negotiations with Japan that include talks on resolving the Kuril Islands