Hun Sen has been Cambodia’s autocratic prime minister for nearly four decades, during which the opposition has been stifled and the country has grown increasingly close to China.

With his Cambodian People’s Party (CCP) virtually guaranteed another landslide victory in this Sunday’s election, it’s hard to imagine dramatic change on the horizon. But the 70-year-old former communist Khmer Rouge fighter and Asia’s longest-serving leader said he is ready to hand the premiership to his oldest son, Hun Manet, a graduate of the US Military Academy at West Point who heads the country’s army.