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Up until now, I think most people have assumed that Colin Powell was wholly on the right side of the torture debate. We know that in 2002 he argued that the Geneva Conventions should be applied to prisoners captured in Afghanistan. After retiring, he supported the McCain amendment to outlaw torture in 2005, and in 2006 opposed the Military Commissions Act that denied habeus corpus to Guantanamo detainees.
But according to the ABC piece, "all the Principals present approved" of the techniques under discussion, which included sleep deprivation and water boarding.