Drone aircraft Targeted killing Government policy 11 Moral and ethical aspects 11 Military policy 6 National security 6 History 5 more ... Terrorism 4 Prevention 3 Counterinsurgency 2 Evaluation 2 Law and legislation 2 Military intelligence 2 Technological innovations 2 War 2 War and emergency powers 2 Aerial operations 1 Afghan War, 2001-2021 1 Air warfare 1 Bombing, Aerial 1 Children and war 1 Civilian war casualties 1 Civilians in war 1 Constitutional law 1 Data mining 1 Decision making 1 Executive power 1 Foreign relations 1 Hegemony 1 Iraq War, 2003-2011 1 less ...