Canada's Foreign Minister Stephane Dion (2nd R), survivors from Khmer Rouge Nong Chanphal (R), Chum Mey (2nd L), and museum director Chhay Visoth (L) pose for a picture during Dion's visit to the Tuol Sleng Genocide Museum, also known as the notorious security prison S-21, in Phnom Penh, Cambodia September 2, 2016. REUTERS/Samrang Pring