Answer:
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Countries, such as France, Russian Federation, Germany, Austria, China and Japan, have laws that forbid extraditing their respective citizens. Others, such as Israel, prohibit extradition of their own citizens in their constitutions.
No country in the world has an extradition treaty with all other countries; for example, theUnited States lacks extradition treaties with several nations, including the People's Republic of China, Namibia, and North Korea.
Most countries require themselves to deny extradition requests if, in the government's opinion, the suspect is sought for a political crime. Many countries, such as Mexico, Canada and most European nations, will not allow extradition if the death penalty may be imposed on the suspect unless they are assured that the death sentence will not be passed or carried out.