History 256 Foreign relations 180 Air power 133 Politics and government 133 Sea-power 124 World politics 96 Military policy 91 Leadership 80 International relations 73 Balance of power 64 National security 64 Success 55 Armed Forces 53 World War, 1939-1945 52 Thesis 51 Congresses 49 Biography 47 United States 45 Juvenile literature 43 Psychological aspects 43 Power (Social sciences) 39 Dissertations, Academic 38 Management 34 Naval strategy 33 Political aspects 33 Security, International 32 Power resources 31 Strategic aspects 31 Navies 30 English language 28