MSNBC - Is Zarqawi Really the Culprit?:

"The stark fact is that we don’t even know for sure how many legs Abu Mussab al-Zarqawi has, let alone whether the Jordanian terrorist, purportedly tied to al Qaeda, is really behind the latest outrages in Iraq. What is clear is that the Iraq conflict has elevated suicide bombing as a weapon of war to a scale never before seen, not only in numbers of victims, but in numbers of attackers, and their ability to field large number of suiciders at the same time...

"Is Zarqawi Ansar al-Islam, or al Qaeda, or both? And even if he is, what really connects him to this week's bombings, except an impulse to find a bete noire, to put a face on the faceless terror. The commanding general of the 1st Armored Division, which patrols Baghdad, said in a briefing March 4 that “it's far more than a supposition and far less than empirical evidence” to say that Zarqawi was involved in the blasts Tuesday. “It's a very educated guess.” ... "