condition that he returned to Kampuchea straight away. However, Sihanouk did not accept the offer, even as preparations were made in Phnom Penh to receive him. Despite that failure, Hun Sen's Kampuchean Government was able to persuade Cheng Heng and In Tam, both ministers in Lon Nol's government, to return to Kampuchea. In the first major step towards restoring peace in Kampuchea, representatives of the CGDK and the PRK met for the first time at the First Jakarta Informal Meeting on 25 July 1988. In that meeting, Sihanouk proposed a three-stage plan, which called for a cease-fire, a UN peacekeeping force to supervise the withdrawal of Vietnamese troops and the integration of all Kampuchean armed factions into a single army. Vietnamese Foreign Minister Nguyen Co Thach urged all parties involved to separate Kampuchean problems into internal and external aspects. Therefore, to begin the process of restoring peace, the Vietnamese delegation proposed a two-stage plan that began with internal discussions among the Kampuchean factions, followed by a roundtable discussion with all involved countries. The Vietnamese proposal won out at the meeting, but no agreements were reached. At the Second Jakarta Meeting, on 19 February 1989, Australian Foreign Minister Gareth Evans forwarded the Cambodian Peace Plan to bring about a ceasefire, a peacekeeping force and the establishment of a national unity government to maintain Kampuchea's sovereignty until elections were held. To facilitate a peace agreement on the eve of the Vietnamese withdrawal, between 29–30 April 1989, Hun Sen convened a meeting of the National Assembly to adopt a new constitution, and the country was renamed the State of Cambodia to reflect the state of ambiguity of the country's sovereignty. Furthermore, Buddhism was re-established as the state religion, and citizens were guaranteed the right to hold private property. In the meantime, however, peace talks between the warring factions continued, with the First Paris Peace Conference on Cambodia held in Paris in 1989. On 26 February 1990, following the withdrawal of Vietnamese troops, the Third Jakarta Informal Meeting was held, at which the Supreme National Council was established to safeguard Cambodian sovereignty. Initially, the Supreme National Council was to have 12 members, with three seats allocated to each faction of the CGDK, and three to the pro-Vietnam Kampuchean People's Revolutionary Party. However, Hun Sen objected to the proposed arrangement, calling instead for each faction of the CGDK to be given two seats for a