A Cambodian lawyer representing the former Khmer Rouge military leader Ta Mok says if his client is charged with genocide, he’ll demand that a series of former world leaders give evidence about their support for the guerrilla movement. The lawyer, Benson Samay, said he would subpoena Margaret Thatcher, Ronald Reagan, Henry Kissinger and three former United Nations secretary-generals to testify on their role in allowing the Khmer Rouge to come to power in 1975 and in supporting it throughout its bloody rule, during which between one and two million Cambodians were killed or starved to death.