Politics

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Vice President Joseph R. Biden Jr., speaks Sept. 11, 2012, during a memorial service at the Flight 93 National Memorial in Shanksville, Pa. (Associated Press)

Republican presidential candidate Mitt Romney receives a commemorative coin from Maj. Gen. Francis D. Vavala after he addressed the National Guard Association Convention in Reno, Nev., on Sept. 11, 2012. (Associated Press)

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**FILE** Israeli Prime Minister Benjamin Netanyahu addresses the weekly cabinet meeting in Jerusalem on Sept. 9, 2012. (Associated Press)

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**FILE** Syrian Prime Minister Wael Nader al-Halqi (left) talks Aug. 31, 2012, with Iranian supreme leader Ayatollah Ali Khamenei, under a portrait of Iranian late revolutionary founder Ayatollah Khomeini, during their meeting in Tehran. (Associated Press/Office of the Iranian Supreme Leader)

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President Obama, first lady Michelle Obama and members of the White House staff pause Sept. 11, 2012, on the South Lawn of the White House in Washington during a moment of silence to mark the 11th anniversary of the terrorist attacks. (Associated Press)

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** FILE ** Ali Asghar Soltanieh, Iran's ambassador to the International Atomic Energy Agency (IAEA), waves on Sept. 10, 2012, as he arrives for a meeting of the IAEA board of governors at the International Center in Vienna, Austria. (Associated Press)