US President Barack Obama (L) stands with Cambodian Prime Minister Hun Sen (C) and Chinese Prime Minister Wen Jiabao during a family photo ahead of a gala dinner on the sidelines of the ASEAN and related summits in Phnom-Penh on November 19, 2012. US President Barack Obama told Cambodia’s premier in a “tense” meeting that his government’s human rights violations were “an impediment” to better bilateral ties, a US official said. AFP PHOTO/Christophe ARCHAMBAULT (Photo credit should read CHRISTOPHE ARCHAMBAULT/AFP/Getty Images)