Region
United States
7
United States --
Asia
1
Asia --
1
China
1
China --
1
East Asia --
1
Former Soviet Republics --
1
Former Soviet republics --
1
Korea
1
Korea (North)
1
Korea (North) --
1
Korea --
1
Libya --
1
Persian Gulf Region --
1
Russia (Federation)
1
Russia (Federation) --
1
Russia --
1
Soviet Union
1
Soviet Union --
1
Sudan --
1