Security, International World politics International relations 5 Military policy 5 National security 4 Globalization 3 1989- 2 Foreign relations 2 International economic relations 2 International trade 2 Political violence 2 Regionalism (International organization) 2 September 11 Terrorist Attacks, 2001 2 Strategy 2 War on terrorism, 2001- 2 21st century 1 Armed Forces 1 Arms control 1 Ballistic missile defences 1 Conflict management 1 Democracy 1 Diplomacy 1 Economic aspects 1 Economic history 1 Economic security 1 Escalation (Military science) 1 Foreign economic relations 1 Geopolitics 1 Human rights 1 Humanitarian intervention 1