reluctantly agreed, and started talks in March 1981 with the Khmer Rouge and the Son Sann-led KPNLF on a unified anti-PRK resistance movement. After several rounds of negotiations mediated by Deng and Singapore's prime minister Lee Kuan Yew, FUNCINPEC, KPNLF, and the Khmer Rouge agreed to form the CGDK in June 1982. The CGDK was headed by Sihanouk, and functioned as a government-in-exile. Prior to the formation of the CGDK political coalition, in the late 1980s and early 1990s the Sonn Sann and Sihanouk opposition forces, then known as the KPNLF and FUNCINPEC, drew some military and financial support from the United States, which sought to assist these two movements as part of the Reagan Doctrine effort to counter Soviet and Vietnamese involvement in Cambodia. In 1984 and 1985, the Vietnamese army's offensives severely weakened the CGDK troops' positions, in effect eliminating the two non-communist factions as military players, leaving the Khmer Rouge as the sole military force of importance of the CGDK. One of the Reagan Doctrine's principal architects, The Heritage Foundation's Michael Johns, visited with Sonn Sann and Sihanouk forces in Cambodia in 1987 and returned to Washington urging expanded United States support for the KPNLF and the Sihanouk resistance forces as a third alternative to both the Vietnamese-installed and supported Cambodian government and the Khmer Rouge, which also was resisting the government. Although the PDK was for the most part isolated from diplomacy, their National Army of Democratic Kampuchea were the largest and most effective armed forces of the CGDK. In 1987, Prince Sihanouk proceeded to take a leave of absence from his position as the president of the CGDK, a move that raised the hopes of Hanoi and Moscow that he would depart the coalition. In 1990, in the run up to the United Nations sponsored Paris Peace Agreement of 1991 the CGDK renamed itself the National Government of Cambodia. It was dissolved in 1993, a year which saw the United Nations Transitional Authority in Cambodia turn power over to the restored Kingdom of Cambodia. In July 1994, the Khmer Rouge would form an internationally unrecognised rival government known as the Provisional Government of National Union and National Salvation of Cambodia. References Further reading See also GRUNK Cambodian-Vietnamese War External links Government and Politics of Cambodia – Coalition Government of Democratic Kampuchea 20th century in Cambodia Kampuchea Kampuchea, Democratic, Coalition Government of Paramilitary organisations based in