Region
Soviet Union
19
Soviet Union --
14
United States
4
China
2
Africa --
1
Africa- foreign relations --
1
Australia
1
China --
1
Europe
1
France
1
Pacific Area
1
Pacific Area --
1
Poland
1
Problem, exercises, etc
1
Sources
1
Soviet Union - --
1
Soviet union- foreign relations- africa
1
United states- foreign relations- africa
1