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Morning roundup

Top Stories: Iran Sentences American To Death, Romney Leads In New Poll

Good morning.

Our early headlines:

Iran Sentences Former U.S. Marine To Death, Accused Him Of Spying.

VIDEO: Rep. Giffords Leads Crowd In 'Pledge' At Tucson Memorial.

Steelers Dared Tebow To Beat Them, And He Did.

Among the morning's other top stories:

— "Diplomats: Iran Is Enriching Uranium Inside Bunker." (The Associated Press)

— "Poll: Romney Leads, Santorum Surges Into Top 3." (CBS News)

— "U.S. Agents Aided Mexican Drug Trafficker to Infiltrate His Criminal Ring." (The New York Times)

— "Malaysia Opposition Leader Acquitted In Sodomy Case." (The Associated Press)

— "Hyundai Elantra, Land Rover Range Rover Evoque Named Car and Truck of the Year" At North American International Auto Show in Detroit. (Detroit Free Press)