Treason is the crime of attacking a state authority to which one owes allegiance. This typically includes acts such as participating in a war against one's native country; attempting to overthrow its government; spying on its military, its diplomats, its officials, or its secret services for a hostile foreign power; or attempting to kill its head of state. A person who commits treason is known in law as a traitor.

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Also known as treasonist, traitoress, traitress

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Overview

From Wikipedia (CC BY-SA 4.0).