Contents: Evolution: The treaty on treaties, Richard D. Kearney and Robert E. Dalton. The Nature of Treaties: What is an agreement in international law? Kelvin Widdows; A mirage in the sand: distinguishing binding and non-binding relations between states, Christine Chinkin; The significance of the registration or non-registration of an international agreement in determining whether or not it is a treaty, D.N. Hutchinson; Some problems regarding the object and purpose of treaties, Jan Klabbers; The international legal obligations of signatories to an unratifies treaty, Martin A. Rogoff. Treaty Integrity: Universality or integrity? Some reflections on reservations to multilateral treaties, Catherine Redgwell. Treaty Interpretation: The International Law Commission's draft articles upon interpretation: textuality redivivus, Myres S. McDougal; Vae victis, or woe to the negotiators! Your treaty or our 'interpretation' of it?, Sir Gerald Fitzmaurice; Varieties of approach to treaty interpretation: with special reference to the Draft Convention on the law of treaties before the Vienna diplomatic conference, Francis G. Jacobs; Theory and practice of treaty interpretation, Maarten Bos. Invalidity, Suspension and Termination of Treaties: Problems concerning the validity of treaties, T.O. Elias; Down the Danube: the Vienna Convention on the law of treaties and the case concerning the Gabcikovo-Nagymaros project, Daniel Reichart- Facilides; The concept of jus cogens in the Vienna Convention on the law of treaties, Merlin M. Magallona; Unilateral denunciation of treaties : the Vienna Convention and the International Court of Justice, Herbert W Briggs; Nonperformance of international agreements, Christine Chinkin.