Have Russia ever lost a war?

Has Japan ever fought Russia?

This article explores the history of conflicts between Japan and Russia, from the Russo-Japanese War in 1904-1905 to more recent confrontations. During World War II, Japan declared war on Russia alongside Germany, and after the war ended a dispute over Sakhalin Island lasted until 1975 when sovereignty was returned to Japan. Currently, there is an ongoing territorial dispute over four small islands known as the Northern Territories or Kuril Islands which are located near Hokkaido island off northernmost part of mainland Japan but are currently under Russian control. Despite attempts at negotiations, no resolution has yet been reached.

Question about Japan

Is Japan and Russia still technically at war?

Japan and Russia have a strong diplomatic relationship today, despite their history of wars and conflicts. This article explores the historical background between the two countries, the current status of their relationship, the legal definition of war and whether or not Japan and Russia are still technically at war, as well as the impact that war has had on bilateral relations and Japanese-Russian trade. It is concluded that while there may be some tension due to past conflicts, neither side wishes to resume armed conflict against each other meaning they are not currently "at war" according to international law standards.