United States 166 China 5 Middle East 4 Africa 3 Developing countries 3 Afghanistan 2 America 2 India 2 Latin America 2 Russia (Federation) 2 Tibet Autonomous Region 2 Tibet Autonomous Region (China) 2 Canada 1 Egypt 1 Europe, Eastern 1 Germany 1 Iraq 1 Islamic countries 1 Israel 1 Jammu and Kashmir (India) 1 Japan 1 Korea (North) 1 Korea (South) 1 Libya 1 Nigeria 1 Outer space 1 Pakistan 1 Polar regions 1 West Bank 1 Western countries 1