Egyptian protesters pose next to a police vehicle set afire during clashes outside the presidential palace in Cairo on Friday, April 26, 2013. Dozens of mostly masked protesters hurled stones and firebombs in clashes with riot police. Protests have become a weekly routine in Egypt, as the country has plunged in turmoil during most of the past two years since the 2011 uprising that ousted longtime President Hosni Mubarak. (AP Photo/Hussein Tallal)
Egyptian protesters pose next to a police vehicle set afire during clashes outside the presidential palace in Cairo on Friday, April 26, 2013. Dozens of mostly masked protesters hurled stones and firebombs in clashes with riot police. Protests have become a weekly routine in Egypt, as the country has plunged in turmoil during most of the past two years since the 2011 uprising that ousted longtime President Hosni Mubarak. (AP Photo/Hussein Tallal)
Anti-government protesters in Cairo's Tahrir Square react to a televised statement on Feb. 10, 2011, by Egyptian President Hosni Mubarak, who stepped down the following day. His departure and that of Tunisia's Zine el-Abidine Ben Ali have some seeing the twilight of U.S. influence in the Middle East and others seeing new opportunities. (Associated Press)
An Egyptian woman chants slogans in Tahrir Square in Cairo on Friday, Jan. 25, 2013, two years after the uprising that ousted President Hosni Mubarak. (AP Photo/Maya Alleruzzo)
An Egyptian woman chants slogans in Tahrir Square in Cairo on Friday, Jan. 25, 2013, two years after the uprising that ousted President Hosni Mubarak. (AP Photo/Maya Alleruzzo)
** FILE ** Egyptian security police fire tear gas at protesters during clashes next to the presidential palace in Cairo, Egypt, Friday, Feb. 8, 2013. Egypt has witnessed a fresh cycle of violence over the past two weeks since the second anniversary of the 2011 uprising that deposed longtime autocrat Hosni Mubarak, with clashes across the country having left scores dead and hundreds injured. (AP Photo/Khalil Hamra)
** FILE ** Egyptian security police fire tear gas at protesters during clashes next to the presidential palace in Cairo, Egypt, Friday, Feb. 8, 2013. Egypt has witnessed a fresh cycle of violence over the past two weeks since the second anniversary of the 2011 uprising that deposed longtime autocrat Hosni Mubarak, with clashes across the country having left scores dead and hundreds injured. (AP Photo/Khalil Hamra)
A carpet with an image of ousted Egyptian President Hosni Mubarak is displayed by backers in Cairo after a court ordered a retrial Sunday on charges that he failed to prevent the killing of protesters during the 2011 uprising that toppled his regime. (Associated Press)
A carpet with an image of ousted Egyptian President Hosni Mubarak is displayed by backers in Cairo after a court ordered a retrial Sunday on charges that he failed to prevent the killing of protesters during the 2011 uprising that toppled his regime. (Associated Press)
