Intervention (International law) Sanctions (International law) National security 3 Philosophy 3 Preemptive attack (Military science) 3 War (International law) 3 Aggression (International law) 1 more ... Armed Forces 1 Civil war 1 Conflict management 1 Decision making 1 Diplomacy 1 Foreign relations 1 International obligations 1 Justification (Law) 1 Peacekeeping forces 1 Reprisals 1 Responsibility to protect (International law) 1 Security, International 1 Self-defense 1 Third parties (International law) 1 less ...