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

Footage showed Humam Khalil Abu Mulal al-Balawi, who the CIA had cultivated as an asset against al-Qaida, sitting with Mehsud's successor. It essentially confirmed the Pakistani Taliban's claim of responsibility for one of the worst attacks in CIA history, though a senior militant said al-Qaida and Afghan insurgents played roles, too.

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," al-Balawi said. "We will always demand revenge for him inside America and outside."

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.