The issue of human rights guarantees embodied in national and international law involves: (1) the legal position of the person who is the object of a judicial assistance measure; (2) the person to be extradited to or from a foreign country; (3) the sentenced person to be transferred as part of execution assistance; and (4) any other person affected, including third parties, as with search and seizure. The article includes: (1) a summary of the plurality and hierarchy of the sources of law, both multilateral and bilateral treaties and international agreements; (2) rules of international and domestic law; (3) sections on political offenses and persecution, extradition obstacles, concurrent jurisdiction and double prosecution, and amnesty; (4) general limitations on judicial assistance; (5) admissibility and granting procedure; (6) judicial review; (7) granting extradition and its enforcement; (8) other forms of judicial assistance to foreign countries; and (9) effects of foreign judgments in Germany and of national judgments abroad. Footnotes, table