Region
China
United States --
China --
27
United States
25
Southeast Asia --
4
Taiwan
4
Taiwan --
4
Japan
3
Japan --
3
Southeast Asia
3
Russia (Federation)
2
Russia (Federation) --
2
Soviet Union
2
Soviet Union --
2
United Nations
2
Asia --
1
Asia, Southeastern
1
Asia, Southeastern --
1
Burma --
1
East Asia
1
East Asia --
1
Pacific Area --
1
Pacific area
1
Pacific area --
1
South China Sea --
1
South China Sea Region
1
United states --
1