ISLAMABAD — The Jordanian doctor who killed seven CIA employees in a suicide attack in Afghanistan said in video clips broadcast posthumously Saturday that all jihadists must attack U.S. targets to avenge the death of Pakistani Taliban chief Baitullah Mehsud.

The footage showed Humam Khalil Abu Mulal al-Balawi — whom the CIA had cultivated as an asset against al-Qaida — sitting with Mehsud's successor in an undisclosed location. It essentially confirmed the Pakistani Taliban's claim of responsibility for one of the worst attacks in CIA history, though a senior militant told The Associated Press that al-Qaida and Afghan insurgents played roles, too.

The development might lead the U.S. to further aid and push Pakistan to crack down on Taliban militants on its soil. The success of the attack on the CIA also raises doubts about the effectiveness of the Pakistani military's ongoing ground operation against the Pakistani Taliban in its stronghold in the South Waziristan tribal region.

Speaking in Arabic in the video shown on the al-Jazeera network, al-Balawi noted the Pakistani Taliban had given shelter to "emigrants" — Muslim fighters from abroad. Mehsud, the group's longtime leader, was killed in August by a CIA missile strike.

"We will never forget the blood of our emir Baitullah Mehsud," said al-Balawi, who wore an Afghan hat and a camouflage jacket on the 1Z\x- minute video clip. "We will always demand revenge for him inside America and outside. It is an obligation of the emigrants who were welcomed by the emir."

The 32-year-old al-Balawi was apparently a double agent — perhaps even a triple-agent — with links to al-Qaida, the CIA and Jordanian intelligence. He was invited inside the CIA facility in Afghanistan's eastern Khost province bearing a promise of information about Ayman al-Zawahri, al-Qaida's second-in-command. Instead, he blew himself up in a Dec. 30 meeting, killing seven including the CIA's base chief.