http://www.bbc.co.uk/news/world-middle-east-25206462#!

"They are technically adept, they move very fast, they have a core of experienced people, they operate in a country with fragile areas and elude the Yemeni authorities. Plus they have the ability to inspire people to lone acts of terror."

What makes AQAP so dangerous is its Saudi master bomb-maker, Ibrahim al-Asiri, one of the CIA's most wanted targets. He is thought to be the brains behind all three non-metallic devices that got past airport security.
Last year, just weeks before the London Olympics, they handed a new, upgraded device to one of their number who volunteered to be a suicide bomber. But he turned out to be an informant who fled to Saudi Arabia, taking the device with him, which was then passed by the Saudis to the FBI for analysis.
All the more reason we should continue drone strikes. These individuals are striving to kill hundreds of innocent civilians by destroying commercial aircraft and we're worried about the potential blowback from drone strikes? Does anybody really think if we stop they'll stop?