Russian President Vladimir Putin made his first-ever visit to the Kuril Islands on Thursday, a remote Pacific island chain claimed by both Russia and Japan, according to state media. The visit, described by TASS as a personal trip, included a stop on Iturup, one of the islands. Japan has responded with a "strong protest," expressing its claim over the territory.

The islands remain a long-standing point of contention between the two nations. The dispute has prevented Japan and Russia from signing a formal World War Two peace treaty. Japanese Prime Minister Sanae Takaichi called the visit "unacceptable," emphasizing Tokyo's claim over the territory. The Russian leader's visit to the islands, which are under Russian control, has reignited tensions between the two countries.

The visit followed recent naval drills in the region, with Putin visiting the islands fresh off observing military exercises. Japan's official stance remains firm, with the government reiterating its claim over the territory. The situation highlights the unresolved nature of the dispute, which continues to affect bilateral relations.

The move has drawn international attention, with reports highlighting the symbolic and political weight of the visit. As the dispute remains unresolved, the visit underscores the ongoing complexity of the relationship between Russia and Japan.