Hun Sen officially launched his Facebook page on Sept. 20, 2015, after his fierce political rival, opposition leader Sam Rainsy, effectively demonstrated how it could be used to mobilize support.

At a ceremony to mark the 46th anniversary of the end of Khmer Rouge rule, Hun Sen hailed the day as Cambodia's "second birthday" and told authorities to protect the country's hard-won peace.

In an announcement on TVK state television and government social media platforms, the country’s National Election Committee said Hun Sen's Cambodian People’s Party won 120 of 125 available ...