Region
prev ...
Philippines
1
Poland
1
Poland --
1
Russia (Federation)
1
Russia (Federation) --
1
Russia --
1
Singapore
2
Singapore --
2
South Africa
1
South China Sea
1
South China Sea --
1
Southeast Asia
1
Southeast Asia --
5
Soviet Union --
2
Spratly Island --
1
Taiwan
1
Taiwan --
1
United States
15
United States --
12
Vietnam --
2
the United States --
1