Region
United States
52
Soviet Union --
51
United States --
51
Soviet Union
50
Asia
2
China
2
China --
2
Europe, Eastern
2
Europe, Eastern --
2
Russia --
2
United states --
2
Afghanistan --
1
Asia --
1
Asia --
1
Austria --
1
Cuba
1
Cuba --
1
Developing countries
1
Eastern Europe
1
Espionage, America --
1
Europe
1
Europe --
1
India
1
India --
1
Korea
1
Korea --
1
Russia
1
Soviet Union --
1
Soviet Union - --
1
Soviet Unions
1
United Nations
1
United States --
1
United States - --
1
Vienna
1