US President Barack Obama Meets Prime Minister Hun Sen in Phnom Penh

US President Barack Obama arrives in Cambodia for the Asean-US Meeting Monday. The meetings come as Asean nations are displaying a rare show of unity against China's sweeping maritime claim, calling for the first formal talks with Beijing over a sea duspute that has raised tensions and exposeed deep divisions in the region. President Obama meets with prime minister Hun Sen of Cambodia before the official Asean-US Meeting. Reuter, Phnom Penh.