History 438 War 162 World War, 1939-1945 92 International relations 80 Politics and government 80 Foreign relations 75 World War, 1914-1918 70 World politics 66 Terrorism 58 History and criticism 54 United States 44 Social aspects 42 Peace 41 India 40 Social conditions 38 Women 37 World war 36 Cold war 35 Globalization 35 Human rights 33 Imperialism 33 Fiction 31 Political aspects 31 Political science 30 Europe 28 International law 28 War (International law) 28 English literature 27 Literature 26 Philosophy 26