An extradition treaty is a formal agreement between two or more countries that outlines the conditions under which one country will surrender a person to another country for prosecution or to serve a sentence. These treaties help ensure that individuals who commit crimes in one country cannot escape justice by fleeing to another country. Typically, extradition treaties specify the types of crimes that are extraditable, the legal processes involved, and any exceptions, such as political offenses. Countries like the United States and Canada often have such treaties to facilitate cooperation in law enforcement and uphold the rule of law across borders.