The fall of the Berlin Wall and the subsequent end of the Cold War had repercussions for Cambodia. With the Soviet Union no longer a threat, the U.S. and its allies no longer saw Vietnamese domination of Cambodia as an issue. The U.S. announced that it no longer recognised the CGDK as the legitimate government of Cambodia at the UN General Assembly. In June, the various Cambodian factions agreed a ceasefire, to be overseen by the United Nations, with the formation of a new Supreme National Council to facilitate the implementation of democratic elections. Pol Pot agreed to these terms, fearing that if he refused the other factions would all unite against the Khmer Rouge. In November, Sihanouk returned to Cambodia. There, he praised the Vietnamese-backed leader, Hun Sen, and stated that the Khmer Rouge's leaders should be put on trial for their crimes. When Samphân arrived in Phnom Penh with the Khmer Rouge's delegation, he was beaten by a mob.