History 108 Foreign relations 52 Politics and government 49 Campaigns 48 World War, 1939-1945 43 Military policy 37 North Atlantic Treaty Organization 35 Biography 30 Defenses 29 National security 26 Armed Forces 22 World politics 21 Security, International 20 Thesis 18 Fiction 17 Indians of North America 17 Nuclear weapons 17 Dissertations, Academic 16 United States 15 Juvenile literature 13 Vietnam War, 1961-1975 13 Congresses 12 Korea (North) 11 Military relations 11 Civil War, 1861-1865 9 Regimental histories 9 Social aspects 9 Strategic aspects 9 English language 8 Europe 8