A diplomatic protest was issued by Tokyo after Russian President Vladimir Putin visited the Kuril Islands. The islands are a Pacific archipelago controlled by Moscow but also claimed by Japan. The visit marked Putin's first trip to the islands, where he toured various facilities and met with local officials.

Japan has long asserted territorial rights to the southernmost islands in the chain. Further details on the visit and the ongoing dispute between Russia and Japan are available from KSAT 12's source. The dispute has been ongoing since the end of World War II and has prevented the two countries from signing a formal peace treaty.