Terrorism Terrorism -- Prevention 24 Prevention -- 12 History 6 Forecasting 5 Weapons of mass destruction 5 more ... Government policy -- 4 International cooperation 4 Radicalism 4 Fanaticism 3 Foreign relations 3 Terrorists -- 3 Government policy 2 National security -- 2 Prevention. -- 2 Religious aspects 2 Security, International 2 Social conflict 2 Business -- 1 Child terrorists 1 Criminology 1 Databases 1 Economic aspects 1 Embassy buildings -- 1 Emergency management 1 Extradition 1 Foreign relations -- 1 Geographic information systems 1 Geography 1 less ...