- Mao, Zedong13
- Djilas, Milovan8
- Nagy, Imre6
- Rákosi, Mátyás6
- Trotsky, Leon6
- Ulam, Adam B.5
- Brzezinski, Zbigniew4
- Staar, Richard Felix4
- Bahro, Rudolf3
- Bukharin, Nikolai Ivanovich3
- Caute, David3
- Laqueur, Walter3
- Lichtheim, George3
- Moore, Barrington3
- Tang, Peter S. H.3
- United States. Congress. House. Committee on Un-American Activities3
- Zagoria, Donald S.3
- Aron, Raymond2
- Berdiaev, Nikolai2
- Bieńkowski, Władysław2