Sources: Top Bush Advisors Approved 'Enhanced Interrogation' quoted from ABC news.
"The CIA has confirmed Zubaydah was one of three al Qaeda suspects subjected to waterboarding.
After he was waterboarded, officials say Zubaydah gave up valuable information that led to the capture of 9/11 mastermind Khalid Sheik Mohammad and fellow 9/11 plotter Ramzi bin al-Shibh.
At the time, the Principals Committee included Vice President Cheney, former National Security Advisor Condoleezza Rice, Defense Secretary Donald Rumsfeld and Secretary of State Colin Powell, as well as CIA Director George Tenet and Attorney General John Ashcroft."
This is good enough for me... Its Enhanced Interrogation of high value subjects, approved by America's top leadership, (of only 3 subjects) producing dramatic results.