Violence -- 25 Political violence 19 Political violence -- 17 Terrorism -- 15 Terrorism 14 Violence 14 Conflict management 5 more ... Ethnic relations 5 Islam 5 Politics and government 5 Prevention 5 Religious aspects -- 5 World politics -- 5 Case studies 4 Democratization 4 Islam and politics 4 September 11 Terrorist Attacks, 2001 4 Social aspects 4 Violence against -- 4 Congresses -- 3 Democracy 3 Family violence 3 Foreign relations -- 3 Globalization 3 History 3 History -- 3 International relations 3 Religious aspects 3 War on terrorism, 2001- 3 Athletes -- 2 less ...