Wave of Change: Tahrir Square Before Mubarak's Speech; U.S. Policy in the Middle East; Who is Omar Suleiman?

Egyptian anti-government demonstrators chant slogans as tens of thousands gather at Cairo's Tahrir Square on February 10, 2011 amid rumors that Hosni Mubarak appeared to be stepping down.
( PEDRO UGARTE/AFP/Getty Images / Getty )

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