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Russia and China have signed an agreement, ending a territorial dispute on their long border that's lasted decades. The pact signed in Beijing by the two countries' foreign ministers finally settles the demarcation of the border. Our China editor Shirong Chen reports.

"The border between China and Russia runs 4,300 kilometers long. The latest treaty resolves the dispute over the eastern part of the border. According to Chinese reports, Russia returns to China all of Yinlong island, known in Russian as Tarabarov and half of Heixiazi island, or Bolshoi Ussuriyasky in Amur River. China and Soviet Union fought border wars over this part of the territory nearly 40 years ago."