The Insider: Daily Terrorism Report

May 12 -- The Bush administration has vowed to catch the killers of American hostage Nick Berg, following the release of a gruesome video on an Islamist web site showing a group of masked men beheading him in Iraq. His captors said they were avenging the abuse of Iraqi detainees, new images of which will be shown to senators later on Capitol Hill today. The CIA is checking claims that top Jordanian terror suspect Abu Musab al Zarqawi was involved in the killing of Berg.

And the New York Times reports today that the leaders of the commission investigating the Sept. 11 terror attacks revealed on Tuesday that they were close to an agreement with the Bush administration that would allow the panel to submit questions to captured Qaeda leaders who are believed to have been involved in planning the attacks.

THE WAR IN IRAQ

Killers: Beheading Avenges Prison Abuse

Video shows American civilian beheaded in Iraq; killers speak of revenge for prisoner abuses. (AP)

U.S.: Berg Had Been Advised to Leave Iraq

Beheaded American civilian Nick Berg had been advised to leave Iraq, U.S. officials say. (AP)

U.S. Pledges to Catch Berg Killers

America vows to catch the killers of Iraq hostage Nick Berg who filmed themselves cutting off his head. (BBC)

America to Hand Over Saddam Iraq conflict Evidence grows of sex attacks on female detainees as US prepares to transfer custody of high-ranking regime officials. (The Guardian)

Senators to See More Iraqi Abuse Photos

Senators to see more Iraqi abuse photos Wednesday but won't have authority to make them public. (AP)

Memo: Iraq Abuse Was 'Vigilante Justice'

Memo obtained by AP says beatings at U.S.-run camp were "vigilante justice" for attack on Jessica Lynch. (AP)

Focus Shifts to Jail Abuse of Women

For Huda Shaker, the humiliation began at a checkpoint on the outskirts of Baghdad. (The Guardian)

Iraqis to Take British Soldiers to Court