War -- Economic aspects 5 Peace -- 5 Case studies 4 Terrorism -- 4 World politics -- 4 Congresses 3 more ... History 3 History -- 3 Psychological aspects 3 Conflict management 2 Conflict management -- 2 Foreign relations -- 2 International relations 2 International relations -- 2 Islam 2 Methodology 2 Military art and science -- 2 Military history, Modern -- 2 Moral and ethical aspects 2 Prevention 2 Prisoners of war -- 2 Psychology 2 Relief of sick and wounded 2 Religious aspects -- 2 Research 2 Soldiers -- 2 Termination 2 Terrorists -- 2 War 2 less ...