I believe that this editorial in The Australian should be required reading for policy makers across the globe. The key quote:

"The American practice of outsourcing torture through the process of extraordinary rendition, as has occurred since September 11 cannot be justified. It is hard to see how sending Habib to Cairo on a CIA-chartered flight protected the US or its allies from imminent attack. His captors may have had reason to suspect Habib for his presence in Pakistan at the time of the 9-11 attacks but this does not justify incarceration without trial in an Egyptian dungeon."