Declaration of Principles for Utilization of the Waters of the Mekong Basin by the sixty-eighth session of the Mekong Committee, prohibiting the "unilateral appropriation" without "prior approval" and "extra-basin diversion" without unanimous consent. However, no committee sessions were held in 1976 or 1977, as no plenipotentiary members had been appointed by Cambodia, Laos, or Vietnam—all of which experienced regime change in 1975. Interim Mekong Committee (1978–1995) The rise of the xenophobic and paranoid Khmer Rouge government in Cambodia made Cambodia's continued participation unsustainable, so in April 1977 the other three riparians agreed to the Declaration Concerning the Interim Mekong Committee, which resulted in the establishment of the Interim Mekong Committee in January 1978. The weakened interim organization was only able to study large-scale projects and implement a few small-scale projects in Thailand and Laos, where the Dutch Government through the IMC funded fisheries and agricultural development projects along the Nam Ngum, as well as port facilities at Keng Kabao near Savannakhet; the institutional role of the organization shifted nonetheless largely to data collection. The 1987 Revised Indicative Basin Plan—the high-water mark of the Interim Committee's activity—scaled back the ambitions of the 1970 plan, envisioning a cascade of smaller dams along the Mekong's mainstream, divided into 29 projects, 26 of which were strictly national in scope. The Revised Indicative Basin Plan can also be seen as laying the groundwork for Cambodia's readmission. The Supreme National Council of Cambodia did request readmission in June 1991. Cambodia's readmission was largely a side-show which masked the true issue facing the riparians: that the rapid economic growth experienced in Thailand relative to its neighbors had made even the modest sovereignty limitations imposed by Mekong agreements seem undesirable in Bangkok. Thailand and the other three riparians (led by Vietnam, the most powerful of the remaining three states) were locked in disagreement over whether Cambodia should be readmitted under the terms of the 1957 Statute (and more importantly, the 1975 Joint Declaration), with Thailand preferring to negotiate an entirely new framework to allow its planned Kong-Chi-Moon Project (and others) to proceed without a Vietnamese veto. Article 10 of the Joint Declaration, requiring unanimous consent for all mainstream development and inter-basin diversion proved to be the main sticking point of Cambodia's readmission, with Thailand perhaps prepared to walk away from the regime altogether. The conflict came to a head in April 1992 when Thailand forced the executive agent