Russia is building a military base on disputed islands seized from Japan during World War II - Business Insider

The move is likely to worsen already frayed relations with Tokyo which lays claim to the Southern Kuril, known in Japan as the Northern Territories.

 

The dispute is so acrimonious that Moscow and Tokyo have still not signed a formal peace treaty after the war. 

http://www.businessinsider.com/r-russia-says-to-build-military-base-on-contested-kurile-islands-2015-10