Debate Erupts Over Legality Of Awlaki's Killing

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Penetrator bombs, commonly known as bunker busters, are stored on pallets at an ammunition plant in McAlester, Okla., in 2002. The U.S. sold 55 bunker busters to Israel in 2009, according to a recent Newsweek report. Sue Ogrocki/AP hide caption

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Sale Of U.S. Bombs To Israel Raises Questions

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Adm. Mike Mullen Retires

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The main ring of the Tevatron, seen in a time exposure. For a quarter century, the particle accelerator at a lab outside Chicago was the most powerful machine of its kind in the world. Reidar Hahn/Fermilab hide caption

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Tevatron Machine Will Smash Particles No More

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American-Born Cleric Al-Awlaki Killed

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BofA Plans To Introduce Monthly Debit Card Fee

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Old-Fashioned Letter Writing Meets Digital Age

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Fla. Moves Up Its Primary Date

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Kansas Secretary of State Kris Kobach says the Sept. 11, 2001, terrorist attacks energized him around the issue of illegal immigration. "We discovered that five of the 19 hijackers had been in the country illegally," Kobach says. Ed Zurga/AP hide caption

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The Man Behind The Illegal-Immigration Crackdown

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Ryan Witmer (left) and Jhonmar Castillo wait with other couples to exchange vows in a civil union ceremony June 2 in Chicago's Millennium Park. New data from the U.S. census may reveal as much about changing attitudes as about changing numbers. Scott Olson/Getty Images hide caption

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