This chapter examines the implementation of international criminal law from the standpoint of domestic law, paying attention to the difference of the bases. Japan's present laws do not consider requests or orders from an International Tribunal but do consider requests from foreign countries. For this it might suffice to add International Tribunals to requesting countries in some way. The International Convention on the Elimination of All Forms of Racial Discrimination does not have such a provision on extraterritorial jurisdiction. The International Convention against the Taking of Hostages has provisions on hostage-taking in order to compel a third party to do or abstain from doing any act. The international Convention on the Protection of Nuclear Materials has provisions on the use, possession and illegal obtaining of nuclear materials, threat by nuclear substances, and compulsion by notice of theft of nuclear materials.