Politics

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Actor George Clooney (right) responds March 14, 2012, to questions at the Dirksen Senate Office Building on Capitol Hill during a Senate Foreign Relations Committee hearing on Sudan and South Sudan. To his right are John Prendergast (center), co-founder of Satellite Sentinel Project and Enough Project, and Jonathan Temin, director of the United States Institute of Peace's Sudan program. (Rod Lamkey Jr./The Washington Times)

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President Obama welcomes British Prime Minister David Cameron during an official arrival ceremony on the South Lawn of the White House in Washington on Wednesday, March 14, 2012. (AP Photo/Charles Dharapak)

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Waving from the balcony of the White House in Washington on Wednesday, March 14, 2012, are (from left) Samantha Cameron, wife of British Prime Minister David Cameron; first lady Michelle Obama; Mr. Cameron; and President Obama. (AP Photo/Carolyn Kaster)

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South Korean activists wearing masks of U.S. President Obama (center), South Korean President Lee Myung-bak (right) and the late South Korean President Roh Moo-hyun cheer to celebrate the free-trade agreement between South Korea and the United States during a rally near the U.S. Embassy in Seoul on Wednesday, March 14, 2012. (AP Photo/Lee Jin-man)

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Iranian President Mahmoud Ahmadinejad (center) listens March 14, 2012, to conservative lawmaker Ali Motahari (not shown), a prominent opponent of the president, as he reads out a series of questions to Ahmadinejad in an open session in parliament in Tehran. (Associated Press)

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Republican presidential candidate, former Massachusetts Gov. Mitt Romney greets supporters at campaign stop at William Jewell College on Tuesday, March 13, 2012 in Liberty, Mo. (AP Photo/Evan Vucci)

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AFL-CIO President Richard Trumka, seen here in August 2010 introducing President Obama for a Washingon speech to the labor federation's executive council, said Tuesday that all 57 affiliates of the AFL-CIO voted to support Mr. Obama's bid to win a second term with money and manpower. (Associated Press)

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ASSOCIATED PRESS A young woman carries a water canister to make bricks for her new house in a camp for internally displaced people in North Darfur, Sudan. Severely injured and disfigured 10 years ago by the long-running violence in the region of the African nation, she is trying to rebuild her life with her sister in the refugee camp.

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In this Monday, March 12, 2012, photo, Republican presidential candidate, former Pennsylvania Sen. Rick Santorum campaign in Montgomery, Ala. Santorum won the Republican presidential primary Tuesday, March 13, in Alabama (AP Photo/Eric Gay)

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Karen Santorum helps prepare her husband, Republican presidential hopeful Rick Santorum, for an interview after a rally Monday in Montgomery, Ala. Mr. Santorum is putting up a fight against his well-funded rival, Mitt Romney. (Associated Press)

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Republican presidential hopeful Rick Santorum failed to qualify for the ballot in Washington, D.C., and Virginia, allowing front-runner Mitt Romney to pad his delegate lead ahead of August's Republican National Convention. Such mishaps prove "he is incapable of taking on President Obama's formidable political machine," said Andrea Saul, a Romney spokeswoman. (Associated Press)

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In this photo taken Tuesday, Feb. 21, 2012 and released by the United Nations African Union Mission in Darfur (UNAMID), Kaltoum Yakoub Issa, 19, carries a water jerry can to make bricks for her new house in Abu Shouk camp for internally displaced people (IDP) in North Darfur, Sudan. (AP Photo/UNAMID, Albert Gonzalez Farran)

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President Barack Obama and Britain Prime Minister David Cameron attend the Mississippi Valley State game against Western Kentucky in a first round NCAA tournament basketball game, Tuesday, March 13, 2012, at University of Dayton Arena, in Dayton, Ohio. (AP Photo/Carolyn Kaster)

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** FILE ** In this Jan. 9, 2011 file photo, George Clooney stands outside a polling station in Juba, then capital of southern Sudan. Actor and human rights activist George Clooney made a quiet visit to a volatile border region between Sudan and South Sudan last week, ahead of testimony he's giving before a U.S. Senate committee on Wednesday, March 14, 2012. (AP Photo/Pete Muller, File)

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President Barack Obama speaks in the Rose Garden of the White House in Washington, Tuesday, March 13, 2012. (AP Photo/Pablo Martinez Monsivais)

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Bary Mike, an Israeli store owner, cleans up after a rocket fired from the Gaza Strip by Palestinian militants landed nearby in the port city of Ashdod on Tuesday. Israel halted its airstrikes against Gaza Strip militants early Tuesday and rocket fire from the Palestinian territory ebbed as a cease-fire ending four days of clashes started to take effect. (Associated Press)