Peter Taylor: The trail to Osama Bin Laden

I remember interviewing Cofer Black, CIA director at the time of 9/11, two years later and asking him why Osama Bin Laden was still at large. He said he was sure of one thing. "I am absolutely optimistic that he will be rendered to justice," he told me. "As with most criminals, sooner or later we will get you. His days are numbered." Perhaps those days were numbered rather longer than Mr Black wou