From this point onwards Sihanouk was kept under house arrest at the royal palace. In September 1978, he was removed to another apartment in Phnom Penh's suburbs, where he lived until the end of the year. Throughout his confinement, Sihanouk made several unsuccessful requests to the Angkar to travel overseas. Vietnam invaded Cambodia on 22 December 1978. On 1 January 1979, Sihanouk was taken from Phnom Penh to Sisophon, where he stayed for three days until 5 January, when he was taken back to Phnom Penh. Sihanouk was taken to meet Pol Pot, who briefed him on the Angkar's plans to repulse Vietnamese troops. On 6 January 1979, Sihanouk was allowed to fly to Beijing from Phnom Penh, where he was greeted by Zhou Enlai's successor, Deng Xiaoping. The next day Phnom Penh fell to advancing Vietnamese troops on 7 January 1979. On 9 January 1979, Sihanouk flew from Beijing to New York to attend the UN Security Council, where he simultaneously condemned the Khmer Rouge for orchestrating the Cambodian genocide as well as the Vietnamese occupation of Cambodia. Sihanouk subsequently sought asylum in China after making two unsuccessful asylum applications with the US and France.