Region
United States
846
Soviet Union
20
Great Britain
14
China
12
Iran
10
Russia (Federation)
10
Middle East
8
Germany
6
Iraq
6
Afghanistan
4
Russia
4
Berlin (Germany)
3
England
3
Europe
3
France
3
Austria
2
Berlin
2
Canada
2
Czechoslovakia
2
Guatemala
2
India
2
Italy
2
Puerto Rico
2
Syria
2
Ukraine
2
Argentina
1
Banghāzī
1
Belgium
1
Bletchley Park (Milton Keynes, England)
1
Bosnia and Herzegovina
1
Brussels
1
Bulgaria
1
Chile
1
Cuba
1
Denmark
1
Detroit
1
Europe, Eastern
1
Europe, Western
1
Foreign countries
1
Former Soviet republics
1
Former communist countries
1
Germany (East)
1
Israel
1
Japan
1
Lebanon
1
Libya
1
Michigan
1
Minnesota
1
Outer space
1
Paris
1
more ...