Sino-Soviet Treaty of Friendship, Alliance and Mutual Assistance

The Sino-Soviet Treaty of Friendship, Alliance and Mutual Assistance (Russian: Советско-китайский договор о дружбе, союзе и взаимной помощи, simplified Chinese: 中苏友好同盟互助条约; traditional Chinese: 中蘇友好同盟互助條約; pinyin: Zhōng-Sū Yǒuhǎo Tóngméng Hùzhù Tiáoyuē), or Sino-Soviet Treaty of Friendship and Alliance for short, was a bilateral treaty of alliance, collective security, aid and cooperation concluded between the People's Republic of China and the Union of Soviet Socialist Republics on February 14, 1950. It superseded the previous Sino-Soviet treaty signed by the Kuomintang government.

Source: Wikipedia — Sino-Soviet Treaty of Friendship, Alliance and Mutual Assistance (CC BY-SA 4.0)