中ソ国境紛争
The PRC is in a number of international territorial disputes, several of which involved the Sino-Russian border. Although the great majority of them are now resolved, China's territorial disputes have led to several localized wars in the last 50 years, including the Sino-Indian War in 1962, the Sino-Soviet border conflict in 1969 and the Sino-Vietnam War in 1979. In 2001, China and Russia signed the Treaty of Good-Neighborliness and Friendly Cooperation, which ended the conflict. Other territorial disputes include islands in the East and South China Seas, and undefined or disputed borders with India, Bhutan and North Korea.