Did CIA undermine Italy's war on terror?

For eavesdropping Italian investigators, Hassan Mustafa Osama Nasr was more than a dangerous terrorism suspect.
Monitored through wire taps and ambient listening devices, he was a walking, talking link to a larger threat in Europe and beyond -- who suddenly vanished on Feb. 17, 2003. That's when prosecutors say CIA agents kidnapped Nasr and flew him to Egypt.
The cleric, also known as Abu Omar, says he was tortured in Egypt under questioning and refused to be an informant.
"The kidnapping of Abu Omar was not just illegal, having seriously violated Italian sovereignty, but it was also harmful and corrosive to the effectiveness of the overall fight against terrorism," said Milan Judge Guido Salvini, who has a standing arrest order for Nasr.