Japan has lodged a "strong protest" against Russian President Vladimir Putin's first-ever visit to the disputed Kuril Islands.
The four southernmost islands of the chain also are claimed by Japan, which calls them the Northern Territories.
Russian president's visit to Iturup, one of four islands claimed by Japan, comes amid worsening ties between Moscow and Tokyo.
Russian President Vladimir Putin on Thursday made his first visit to the Kuril Islands, a Moscow-controlled Pacific archipelago that also is claimed by Japan, which voiced a diplomatic protest over ...
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