International extradition is the formal process by which a fugitive found in one country is surrendered to another country for trial or punishment. International law does not impose any obligation on states to extradite. Nor does it set out any special procedure for handing over the person concerned to the requesting state. Under International Law, extradition is in most of the cases is a matter of bilateral treaty. The law of extradition is a dual law. It is ostensibly a municipal law; yet it is a part of international law also, inasmuch as it governs the relations between two sovereign States over the question of whether or not a given person should be handed over by one sovereign State to another sovereign State. This question is decided by national courts but on the basis of international commitments as well as the rules of international law relating to the subject.