Al Qaeda claimed credit for the deadliest attack against the CIA in 26 years, releasing a written statement saying a suicide bombing that killed five agency officers and two security contractors was retaliation for drone attacks that killed senior militant leaders.
The statement identified the bomber as Humam Khalil Mohammed Abu Malal, a Jordanian doctor described as a double agent by U.S. intelligence officials. Humam Khalil was invited to brief a group of CIA officers in a camp along the Pakistan-Afghan border after promising information about Al Qaeda's deputy leader, Ayman Al Zawahiri.
"He detonated his fine, astonishing and well-designed explosive device, which was unseen by the eyes of those who do not believe in the hereafter," said Mustafa Abu al-Yazid, al Qaeda's number three, according to a translation by the SITE Intelligence Group.
Yazid claimed al Qaeda launched the attack as payback for the deaths of three militant leaders: Baitullah Mehsud, the former head of the Pakistani Taliban; Saleh al-Somali, who was in charge of al Qaeda operations outside of Pakistan and Afghanistan; and Abdullah Saeed al-Libi, a senior Libyan member of the group.
All three were killed by the increasingly effective drone campaign in Pakistan's tribal areas. The campaign is run by the CIA, and U.S. officials say drone strikes have killed a dozen senior militant leaders on a constantly refreshed list of 20 top terrorist targets.
The drone strikes "have been very effective, and they have knocked al Qaeda and other Islamic extremist organizations off balance," Sen. John McCain, the ranking member of the Senate Homeland Security and Governmental Affairs committee, told reporters today in Kabul. The strikes "can claim measurable success in having carried out those operations, and I think that they should continue."
Previously, both the Afghan Taliban and the Pakistani Taliban have claimed credit for the attack, and U.S. officials say it's still not clear whom Hamam Khalil, whose last name is often written as al-Balawi, was working with.
Residents on both sides of the Afghan-Pakistani border where the CIA base was attacked say nothing happens in the area without the knowledge of the Haqqani group, one of the most lethal Taliban organizations.
U.S. officials acknowledge that al-Balawi could have been working with senior Haqqani militants, and it's those Haqqani leaders who have been struck by drone strikes nearly every day since the CIA base was attacked Dec. 30. Just yesterday two drone strikes hit the same target in North Waziristan, just over the border from where the CIA base was attacked.
Wednesday's dual strikes targeted militants living in the house and then the people who were cleaning up the house's remains, according to residents and regional intelligence officials. It appears to be one of the first times in the five year drone campaign that a missile targeted a group picking through the rubble of an earlier drone strike. A total of 12 people died in the twin strikes.