On 23 October 1991, Sihanouk led the FUNCINPEC, Khmer Rouge, KPNLF, and PRK into signing the Paris Peace Accords. The accords recognised the SNC as a "legitimate representative of Cambodian sovereignty" and created the United Nations Transitional Authority in Cambodia (UNTAC) to serve as a transitional government between 1992 and 1993. In turn, UNTAC was given the mandate to station peacekeeping troops in Cambodia to supervise the disarmament of troops from the four warring Cambodian factions and to carry out national elections by 1993. Sihanouk subsequently returned to Phnom Penh on 14 November 1991. Together with Hun Sen, Sihanouk rode in an open top limousine from Pochentong Airport all the way to the royal palace, greeting city residents who lined the streets to welcome his return. The UNTAC administration was set up in February 1992, but stumbled in its peacekeeping operations as the Khmer Rouge refused to cooperate in disarmament. In response, Sihanouk urged UNTAC to abandon the Khmer Rouge from the peacekeeping process on two occasions, in July and September 1992. During this period, Sihanouk mostly resided in Siem Reap and occasionally traveled by helicopter to supervise election preparations in KPNLF, FUNCINPEC, and Khmer Rouge resistance bases.