A few examples: the United Nations Framework Convention on Climate Change (UNFCCC) established a framework for the development of mandatory limits for greenhouse gas emissions, while the Kyoto Protocol contained specific provisions and regulations that were subsequently adapted. 79 The VCLT does not address the impact of armed conflict on treaties (armed conflict, treaty impact). Traditionally, it has been felt that the legal status of bilateral and multilateral treaties should be distinguished from the armed conflict. In principle, peace agreements provide for a solution to pre-war treaties. During its 52nd session, the ILC addressed the theme “The Impact of Armed Conflict on Contracts” for future work and appointed Professor I Brownlie as Special Rapporteur. In 2005, Brownlie presented a number of draft articles (ILC Special Rapporteur I Brownlie “First Report on the Effects of Arms Conflict on Treaties” [21 April 2005] UN Doc A/CN.4/552). The ILC supported the views of the Special Rapporteur, who favours the continuity of contractual commitments in the event of armed conflict, unless there is a need to suspend or terminate. The ILC felt that the somewhat outdated doctrine of the past should not be relied upon, which should undermine this continuity. The ILC also agreed that it was preferable to re-examine the problem of the impact of armed conflict on treaties from the perspective of certain provisions and circumstances rather than invoke general rules, as it would be more appropriate to identify the considerations that a state should consider in the circumstances, rather than trying to establish certain inflexible rules that states must always respect. The Special Rapporteur considered that there was no valid reason to establish specific criteria for bilateral and multilateral treaties. It considers that the intention of the parties should be decisive (first report on the impact of armed conflict on treaties in paragraph 5 above).
127 The basic principle of contract law, pacta sunt servanda, remains the basis on which the entire system of contractual obligations is based. The most important source of contract law standards is the VCLT, which in most cases represents existing customary international law. However, some issues remain unresolved, such as the issue of reservations, in particular reservations about human rights treaties, an issue currently on the ILC`s agenda. Some issues are outside the jurisdiction of the VCLT, such as treaty inequality or the impact of armed conflict on treaty law, which remains one of the outstanding issues and is therefore currently under review by the ILC. There are other problematic problems, such as the relationship between the material violation of a treaty and international law of counter-measures, as well as the role of Preparatory Work in the interpretation of treaties. The question of succession is also not fully settled, and it is indisputable between states that the VCSS-T only partially codifies existing customary international law. 34 The formal document, which summarizes the deliberations of a diplomatic conference and records its results, is described as a final act. It generally mentions the purpose of the conference, lists the participating states and contains the text of the treaty adopted as an appendix.