Influence 75 Thesis 57 Dissertations, Academic 47 History 46 Foreign relations 29 Politics and government 26 Leadership 23 Civilization 18 Influence (Psychology) 17 Islamic influences 17 September 11 Terrorist Attacks, 2001 17 Islam 12 Persuasion (Psychology) 11 Interpersonal relations 10 Military policy 10 Psychological aspects 10 Success 10 Terrorism 10 World politics 10 National security 8 Relations 8 Religious aspects 8 Armed Forces 7 Executive ability 7 Western influences 7 Christianity 6 Congresses 6 Decision making 6 Juvenile literature 6 Political aspects 6