Portrait gallery of Communist leaders from all over the world. The most prominent are obviously Stalin and Mao.
From left to right:
First row
Joseph Stalin (Russia)
Mao Zedong (China)
Second row
Maurice Thorez (France)
Palmiro Togliatti (Italy)
Kim Il-sung (North-Korea)
Bolesław Bierut (Poland)
Hồ Chí Minh (Vietnam)
Third row
Gheorghe Gheorghiu-Dej (Romania)
Valko Velev Chervenkov (Bulgaria)
Klement Gottwald (Czechoslovakia)
Mátyás Rákosi (Hungary)
Friedrich Wilhelm Reinhold Pieck (German Democratic Republic)
Fourth row
William Z. Foster (United States)
Kyuichi Tokuda (Japan)
Enver Hoxha (Albania)
Khorloogiin Choibalsan (Mongolia)
Fifth row
Isidora Dolores Ibárruri Gómez (Spain)
Harry Pollitt (England)

The dove, top center, is from a 1950 lithograph by Pablo Picasso, used to illustrate the poster of the 1950 World Congress of the defenders of peace, held in London, and for the stage decoration of the The Asia and Pacific Rim Peace Conference in Beijing on October 2, 1952.