In law, treason is criminal disloyalty, typically to the state. It is a crime that covers some of the more extreme acts against one's nation or sovereign. This usually includes things such as participating in a war against one's native country, attempting to overthrow its government, spying on its military, its diplomats, or its secret services for a hostile and foreign power, or attempting to kill its head of state. A person who commits treason is known in law as a traitor.