sentences:  In 2007, Cambodia proposed to the World Heritage Committee's Thirty-First Session that Preah Vihear Sanctuary be listed as a UNESCO World Heritage Site.As Cambodia and Thailand had not resolved border issues concerning the site, the Committee postponed consideration to its 32nd session, and asked Cambodia to provide a complete management plan for the area.Early in January 2008, Cambodia invited Thai experts to participate in a site survey of the Buffer Zone, and then to Siem Reap and Phnom Penh to collaborate with a team of international experts in the making of a plan for the area in Cambodian territory.