As pointed out in the preface, international doctrine lacked a systematic analysis of the domestic judicial application of international law, one based not on a theorization of relations between domestic law and international law but on an accurate analysis of data emanating from the decisions of domestic courts. The gap has now been filled by this truly commendable work. The merit of this book, in our opinion, lies in the fact that it sheds light on numerous concepts in respect of which there is often uncertainty, specifically because their definition rests on solely theoretical constructs rather than on an objective analysis of practice.