Region
Europe
United States --
Europe --
30
United States
30
Middle East
3
Middle East --
3
Soviet Union
3
Soviet Union --
3
Lebanon --
2
Russia (Federation)
2
Russia (Federation) --
2
Algeria
1
Algeria --
1
Canada
1
Developing countries
1
Developing countries --
1
France
1
France --
1
Islamic countries
1
Islamic countries --
1
Russia
1
Russia --
1