Elena Conde Pérez. La denuncia de los tratados. Régimen en la Convención de Viena sobre el derecho de los tratados de 1969 y práctica estatal. Madrid: Congreso de los Diputados, 2007. Pp. 258. �9. ISBN: 9788479433031.
Treaties are the major legal instruments governing inter-state relations and an indispensable tool for diplomacy: since 1945 some 54,000 treaties have been registered with the United Nations, still representing only about 70 per cent of treaties which have entered into force.1 Recently, there has been renewed doctrinal interest in the general law of treaties. It is evidenced by the spread of commentaries on the Vienna Convention on the Law of Treaties (VCLT), including O. Corten and P. Klein's major three volume commentary of 2006 in the French language, M. Villiger's commentary of 2009, and the forthcoming updated English translation of Corten and Klein which is announced for the autumn of 2010. Aust's Modern Treaty Law and Practice2 may also be mentioned here. This new wave of publications is remarkable given the fact that for more than 30 years Sinclair's The Vienna Convention on the Law of Treaties was de facto the only authoritative treatise on the Convention.
Notwithstanding the recent scholarly interest in the general law of treaties, only a few monographs specifically on treaty termination have been published. These were mostly dedicated to specific aspects of denunciation.3 Against that background, Elena Conde Pérez's investigation of the VCLT's regime of treaty denunciation addresses an important shortcoming.
The author examines comprehensively the different forms of treaty denunciation with particular focus on the termination/withdrawal grounds under general international law. While emphasis is laid on the grounds �