Geographic Subject
Soviet Union
United States
19
Middle East
8
Iraq
5
Japan
4
Egypt
3
Europe
3
India
3
Russia
3
Asia, Central
2
China
2
Cuba
2
Germany
2
Germany (East)
2
Iran
2
Italy
2
Kuwait
2
Switzerland
2
Africa
1
Arab countries
1
Europe, Eastern
1
Finland
1
Hungary
1
Indian Ocean Region
1
Latin America
1
Mediterranean Region
1
North Pacific Region
1
Persian Gulf Region
1
Scandinavia
1
Siberia
1
Suez Canal
1
Suez Canal (Egypt)
1
URSS
1
Vietnam
1