Region
United States --
34
United States
17
Soviet Union --
13
Soviet Union
10
Great Britain --
9
Great Britain
7
China --
3
Developing countries
3
Germany --
3
Developing countries --
2
France
2
France --
2
Germany
2
Japan --
2
Russia
2
Russia --
2
Yugoslavia --
2
Africa
1
Africa --
1
Asia, Southeastern
1
Asia, Southeastern --
1
Germany (East)
1
Germany (East) --
1
Germany (West)
1
Germany (West) --
1
India
1
India --
1
Southern States
1
Southern States --
1
Spain --
1
USA --
1
United states --
1
World politics --
1
Yugoslavia
1