Peace-building Conflict management 36 Peace 21 Peacekeeping forces 18 Postwar reconstruction 17 International cooperation 14 History 12 Nation-building 12 Politics and government 12 War 10 Social aspects 8 Moral and ethical aspects 7 Economic aspects 6 Pacific settlement of international disputes 6 Political aspects 6 International relations 5 Political violence 5 Prevention 5 Reconciliation 5 Security, International 5 Women and peace 5 Liberalism 4 Psychological aspects 4 Religious aspects 4 Causes 3 Crisis management 3 Government, Resistance to 3 Humanitarian intervention 3 International organization 3 Intervention (International law) 3