U.S. counterterrorism officials aren't commenting on a video newly posted on the Internet.
In it, al-Qaida deputy leader Ayman al-Zawahri calls on Muslims to support al-Qaida-in-Iraq leader Abu Musab al-Zarqawi.
The video is dated last November and it's not clear when it was actually recorded or why it wasn't released until now.
It's also not clear if it was recorded around the time of the November Ninth hotel bombings in Jordan that killed at least 60 people.
Al-Qaida in Iraq claimed responsibility for those bombings, but al-Zarqawi was widely criticized for them, even by other Islamic militants.
He has not issued his own statements since January, apparently seeking to lay low after the criticism.
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