Analysis: 'Unanswered questions' cloud decisions on Iraq

The chairman of the House Permanent Select Committee on Intelligence says he has traveled to Iraq eight times to assess U.S. intelligence collection, and each time he returns to Washington struck by the lack of knowledge about the insurgency that is killing hundreds of American troops.

"When I come back from Iraq, or even a briefing here, you learn how tough intelligence is," said Rep. Peter Hoekstra, Michigan Republican. "I don't walk out of there believing that I've got a crystal-clear picture of what the insurgency is, what the scope of it is, what the magnitude is, what the capabilities are. How much is international? How much is external? How much is al Qaeda? How much is Iranian? How much is Syrian? I walk out with lots of unanswered questions."

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