Kang Khek Ieu was known as 'Cambodia's Himmler', a torturer who oversaw the deaths of 17,000 people. As he prepares to go on trial, he gives a chilling insight into the Khmer Rouge – the most detailed account yet from a top henchman.
He was Pol Pot's trusted henchman, the brilliant mathematician who calmly fashioned an efficient apparatus of torture and death out of a Phnom Penh high school and who oversaw, during the 
"I and everyone else who worked in that place knew that anyone who entered had to be psychologically demolished, eliminated by steady work, given no way out. No answer could avoid death. Nobody who came to us had any chance of saving himself."
The command had come from above, he said. "All the prisoners had to be eliminated. We saw enemies, enemies, enemies everywhere." He could not have rebelled or fled, he insisted. "If I had tried to flee, they were holding my family hostage, and my family would have suffered the same fate as the other prisoners in Tuol Sleng. If I had fled or rebelled it would not have helped anyone."