The Sino-Soviet Treaty of Friendship was signed on February 14, 1950, between the People's Republic of China and the Soviet Union. This treaty aimed to strengthen the political, economic, and military ties between the two communist nations during the early Cold War period. It included mutual defense clauses and economic assistance agreements, reflecting their shared ideology. The treaty was significant in establishing a formal alliance, especially after the Chinese Civil War, which resulted in the victory of the Chinese Communist Party. However, tensions later arose between the two countries, leading to a split in the 1960s, which diminished the treaty's importance over time.