Prevention 24 Terrorism 22 Government policy 10 Economic aspects 9 Economic conditions 7 Mathematical models 7 Foreign economic relations 6 more ... Technological innovations 6 Evaluation 5 Finance 5 Housing subsidies 5 International economic relations 5 Juvenile delinquency 5 Medical care 5 Terrorisme 5 Violence 5 Appropriations and expenditures 4 Employment 4 Forecasting 4 Law enforcement 4 National security 4 POLITICAL SCIENCE 4 Radicalism 4 Social aspects 4 Telephone 4 Armed Forces 3 Case studies 3 Costs 3 Criminal justice, Administration of 3 Decision making 3 less ...