The U.S. carpet bombing of Cambodia between 1969 and 1973 has been well documented, but its architect, former national security adviser and Secretary of State Henry Kissinger ... bears responsibility for more violence than has been previously reported. An investigation by The Intercept provides evidence of previously unreported attacks that killed or wounded hundreds of Cambodian civilians during Kissinger's tenure in the White House."You can trace a line from the bombing of Cambodia to the present," said Greg Grandin, author of "Kissinger's Shadow." "The covert justifications for illegally bombing Cambodia became the framework for the justifications of drone strikes and forever war." Kissinger bears significant responsibility for attacks in Cambodia that killed as many as 150,000 civilians, according to Ben Kiernan, former director of the Genocide Studies Program at Yale University and one of the foremost authorities on the U.S. air campaign in Cambodia. That's up to six times the number of noncombatants thought to have died in U.S. airstrikes in Afghanistan, Iraq, Libya, Pakistan, Somalia, Syria, and Yemen during the first 20 years of the war on terror. Grandin estimated that, overall, Kissinger " who also helped to prolong the Vietnam War and facilitate genocides in Cambodia, East Timor, and Bangladesh; accelerated civil wars in southern Africa; and supported coups and death squads throughout Latin America " has the blood of at least 3 million people on his hands.