Region
Australia
2
Balkan Peninsula
1
California
1
Canada
2
China
6
Europe
2
European Union countries
1
Great Britain
2
Illinois
2
Iran
3
Ireland
1
Israel
2
Korea (North)
2
Management
1
New York (State)
1
Nigeria
1
Russia (Federation)
7
Security measures
1
South Dakota
2
Switzerland
1
Texas
2
United States
700