Region
United States
304
Europe
55
Russia (Federation)
51
China
44
Middle East
39
Pacific Area
29
Iran
21
Asia
20
Korea (North)
16
Indo-Pacific Region
12
European Union countries
11
South China Sea
11
Asia, Central
9
East Asia
9
Latin America
9
Arctic regions
8
Africa
7
India
7
Arab countries
6
Pakistan
6
Developing countries
5
Southeast Asia
5
Western countries
5
Africa, North
4
Asia, Eastern
4
Foreign countries
4
Great Britain
4
Iraq
4
Soviet Union
4
Syria
4
Ukraine
4
Yemen (Republic)
4
Afghanistan
3
Caribbean Area
3
Central America
3
East China Sea
3
Europe, Eastern
3
Japan
3
Korea (South)
3
North America
3
Philippines
3
South Asia
3
Turkey
3
Africa, West
2
Armenia
2
Australia
2
Baltic States
2
Brazil
2
Canada
2
Caucasus
2
more ...