Phnom Penh with the Khmer Rouge's delegation, he was beaten by a mob. Pol Pot established a new headquarters along the border, near Pailin. He called on the Khmer Rouge to redouble their efforts in gaining support across Cambodia's villages. In June, Samphan announced that in contravention of earlier agreements its troops would not disarm, stating that it refused to do so while Vietnamese soldiers remained in Cambodia. The Khmer Rouge became increasingly confrontational, expanding its territory across western Cambodia. It carried out massacres of the Vietnamese settlers who had recently arrived in the area. Hun Sen's forces also carried out military activities, with UN peacekeepers proving ineffective in preventing the violence. In January 1993, Sihanouk returned to Beijing, declaring that Cambodia was unprepared for elections. The Khmer Rouge had formed a new party, the Cambodian National Union Party, through which it could take part in the election, but in March Pol Pot announced that they would boycott the vote. At this point he moved his headquarters to Phnom Chhat; Samphan joined him there, having withdrawn his Khmer Rouge delegation from Phnom Penh. In the May 1993 elections, Norodom Ranariddh's FUNCINPEC won 58 of the 120 available seats in the National Assembly; Hun Sen's Cambodian People's Party came second. Sen, who was backed by the Vietnamese, refused to acknowledge defeat. Sihanouk negotiated the formation of a coalition government between the two parties, introducing a system whereby Cambodia would have two prime ministers, Ranariddh and Sen. The new Cambodian National Army then launched an offensive against the Khmer Rouge. By August, it had captured Phnom Chhat, with Pol Pot fleeing back into Thailand. The Khmer Rouge launched a counter-offensive, having regained much of the territory they recently lost by May 1994. Pol Pot moved to Anlong Veng, but as that was overrun in 1994 he relocated to Kbal Ansoang, on the crest of the Dangrek Mountains. The Khmer Rouge nevertheless faced growing levels of desertion over the first half of the 1990s. Pol Pot placed renewed emphasis on those living in Khmer Rouge territory imitating the lives of the poorest peasants and in 1994 ordered the confiscation of private transport and an end to cross-border trade with Thailand. In September he ordered the execution of a Briton, a Frenchman, and an Australian who had been captured in a Khmer Rouge attack on a train. In July 1996, a mutiny broke out