On that day in 1855, Japan and Russia signed a Treaty of Commerce, Navigation and Delimitation, drawing a national border that placed the four islands within Japanese territory.

At the same time, Japan’s joint military activities with the US and other NATO members near Russia’s Far Eastern borders have demonstratively intensified. The official also cited Japan’s ...

Finland, which shares a border stretching more than 1,300 kilometers with Russia, has been increasingly concerned about regional security following Russia’s invasion of Ukraine. This led the ...