Region
Soviet Union
Soviet Union --
51
United States --
27
United States
26
Developing countries
8
Middle East
5
Middle East --
5
Europe, Eastern
4
Europe, Eastern --
4
Afghanistan
2
Afghanistan --
2
China
2
Developing countries --
2
Eastern Europe
2
Europe
2
Europe --
2
Israel
2
Israel --
2
Japan
2
Japan --
2
Russia
2
Russia --
2
United states --
2
Africa
1
Africa --
1
Asia
1
Asia --
1
Asia, Southeastern
1
Asia, Southeastern --
1
Austria --
1
China --
1
Cuba
1
Cuba --
1
East Asia --
1
Espionage, America --
1
Former Soviet Republics
1
Former Soviet Republics --
1
Germany
1
Germany --
1
Great Britain
1
Great Britain --
1
India
1
India --
1
Iraq
1
Iraq --
1
Korea
1
Korea --
1
Pakistan
1
Pakistan --
1
Russia (Federation)
1
more ...