Although each country generally treats their own terrorists as criminals within the criminal justice system, the public often tries to look for a motive for international incidents. The international agreements on air piracy and internationally protected persons generally ignore the motivations behind terrorism and simply define the prohibited actions. Governments should pursue talks with terrorist groups, but without concessions. Nations should not hesitate to use diplomatic demarche, publicity, or military strikes to raise the cost to State sponsors of terrorism. The international climate is moving toward recognition that terrorists are criminals, thus a mixture of law enforcement and intelligence procedures can also assist in apprehending terrorists.