As i understand certain countries are not allowed to extradite people they believe will be tortured as well, though with the process of rendition it is a sneaky way around that, but how long do you think countries will just let you quietly take guys from our country with no legal proceedings ? (probably a bit longer but sooner or later people will get pissed off with it, and then you might find it is suddenly harder to extradite through legal means)

By all means ignore international opinion but that don't be surprised (or angry) when international opinion ignores you