Region
Soviet Union --
United States --
Soviet Union
18
United States
18
China
3
China --
2
Europe --
2
United states --
2
Afghanistan --
1
Africa, Southern --
1
Asia
1
Asia --
1
Caribbean Area --
1
Eastern Europe
1
Europe
1
Europe, Eastern
1
Europe, Eastern --
1
India
1
India --
1
Korea
1
Korea --
1
Pakistan
1
Pakistan --
1
Russia --
1
United Nations
1