International relations World politics Foreign relations 12 War (International law) 9 Forecasting 8 Balance of power 6 War 6 21st century 5 History 5 International economic relations 5 Globalization 4 Security, International 4 Cold War 3 Conflict management 3 Diplomacy 3 Forecasts 3 Military history, Modern 3 Terrorism 3 Twenty-first century 3 Encyclopedias 2 Geopolitics 2 Political violence 2 Strategy 2 1989- 1 20th century 1 21th century 1 Addresses, essays lectures 1 Addresses, essays, lectures 1 Anarchism 1 Arma Nuclear 1