Al-Qaeda tape 'authentic'
The CIA has said it is confident that an audio recording purporting to be of a senior al-Qaeda aide, Ayman al-Zawahri, aired on Wednesday is authentic. However, the analysis of a tape attributed to Osama Bin Laden has so far proved inconclusive, an official said. The two audio recordings were played on al-Jazeera TV along with previously unseen video footage of the two men. Full Story