Cambodian Prime Minister Samdech Techo Hun Sen (C, front) attends an event marking the 20th anniversary of the end of civil war in Phnom Penh, Cambodia, on Dec. 29, 2018. Cambodia on Saturday commemorated the 20th anniversary of the end of civil war, vowing to use all necessary means to continue protecting the country's hard-earned peace. (Xinhua/Sovannara)











