The Kremlin had not commented as of Thursday on a new map that shows disputed territory as being within China’s borders, including Bolshoi Ussuriysky Island, which is shared by China and Russia.
Malaysia, the Philippines, India and Taiwan have all complained about the map, published by China’s Ministry of Natural Resources.
The map lays claim to land on China’s border with India, all of Taiwan, and islands, reefs and maritime zones in the South China Sea, which are contested by half a dozen countries.