China and the Soviet Union signed a treaty of Friendship, Alliance and Mutual Assistance in February 1950. Mao is holding a large folded sheet representing this. Behind Stalin and Mao are the Moscow Kremlin, Russian folk dancers, Tian'anmen and Chinese folk dancers. The framed picture of a dove in the foreground is the 1949 lithograph by Pablo Picasso, used to illustrate the poster of the 1949 Paris Peace Congress (Congrès mondial des Partisans de la paix) and one of the most used images of the international peace movement in the 1950s.