Russian President Vladimir Putin visited the Kuril Islands, marking his first trip to the disputed territory since Soviet forces seized them from Japan in the final days of World War II. Japan's government called the visit "absolutely unacceptable," escalating tensions between the two nations. The move directly challenges Tokyo's long-standing claim to the archipelago and signals Moscow's resolve to hold it.
The islands, known as the Southern Kurils in Russia and the Northern Territories in Japan, have blocked a formal peace treaty between the two countries for more than 70 years. Japan considers the Soviet occupation illegal and maintains its claim on historical and legal grounds, citing 19th-century treaties that established Japanese sovereignty.
The archipelago gives Russia year-round Pacific Ocean access for its naval fleet. Moscow has recently expanded military infrastructure on the islands, deploying advanced missile systems and enlarging airfields.
Previous diplomatic efforts to resolve the dispute have stalled repeatedly, despite Japan's consistent offers of economic cooperation. Prime Minister Fumio Kishida's government is expected to file a formal protest through diplomatic channels. The incident complicates Tokyo's foreign policy and its alliance with the United States, which has consistently supported Japan's position on the islands.
The United States views the dispute as a key regional flashpoint tied to its broader Indo-Pacific security strategy. The Japanese Foreign Ministry previously summoned the Russian ambassador over similar actions, indicating a pattern of escalating tensions.
Analysts expect Japan to reiterate its demands for the return of the islands at the next United Nations General Assembly session.
