Moscow: Russian Foreign Minister Sergey Lavrov on Monday accused Japan of having 'crossed the line of decency' by protesting President Vladimir Putin's visit to the Kuril Islands. Speaking at a news conference in Moscow, Lavrov said Tokyo had no grounds to object to the Russian president visiting the islands and argued that Japan's ambassador in Moscow should appear at the Russian Foreign Ministry to explain the protest.

According to Anadolu Agency, Lavrov mentioned that the Japanese Embassy informed Russian authorities that Ambassador Akira Muto could not visit the Foreign Ministry on either Aug. 14 or Aug. 17, without providing a clear explanation. Lavrov expressed confusion over this, adding that the ambassador was reportedly either not in Moscow or was feeling unwell.

Lavrov also criticized Tokyo's 'militaristic line' and urged the Japanese government to focus on domestic issues rather than criticizing Russia. Putin visited Iturup on Aug. 13, marking his first visit to the island. Japan subsequently lodged a 'strong protest,' reiterating its position that the southern Kuril Islands, which Tokyo calls its 'Northern Territories,' belong to Japan.

The ongoing dispute over the four southern Kuril Islands - Iturup, Kunashir, Shikotan, and the Habomai Islands - has prevented Russia and Japan from signing a post-World War II peace treaty. Lavrov argued that by joining the UN, Japan ratified its Charter and thereby accepted the outcomes of World War II, including Russia's sovereignty over the Kuril Islands.