AP Photo/Emilio Morenatti
An anti-government protestors holding an Egyptian flag sits atop a lamppost as a helicopter flies past in Tahrir Square, Cairo, Egypt, Friday, Feb. 4, 2011.
Getty Images/Chris Hondros
Anti-government protesters hold a sign referencing the Facebook social networking website that has been important in organizing protesters in Tahrir Square Feb. 4, 2011 in Cairo, Egypt.
Getty Images/Chris Hondros
Anti-government protesters watch with an Egyptian flag on a rooftop on the edge of Tahrir Square Feb. 4, 2011 in Cairo, Egypt.
Getty Images/John Moore
Anti-government demonstrators throw stones at supporters of Egyptian President Hosni Mubarak on Feb. 4, 2011 in Cairo, Egypt.
Getty Images/John Moore
Anti-government demonstrators march to protest the rule of Egyptian President Hosni Mubarak on Feb. 4, 2011 in Cairo, Egypt.
Getty Images/John Moore
Anti-government demonstrators grab for stones while charging a group of supporters of Egyptian President Hosni Mubarak on Feb. 4, 2011 in Cairo, Egypt.
AP Photo/Emilio Morenatti
Anti-government protestors raise their hands in the victory sign in Cairo's Tahrir Square, Friday, Feb. 4, 2011. The Egyptian military guarded thousands of protesters pouring into Cairo's main square on Friday in an attempt to drive out President Hosni Mubarak after a week-and-a-half of demonstrations.
AP Photo/Tara Todras-Whitehill
People pray in Tahrir Square in Cairo, Egypt, Friday, Feb. 4, 2011. The Egyptian military guarded thousands of protesters pouring into Cairo's main square on Friday in an attempt to drive out President Hosni Mubarak after a week-and-a-half of pro-democracy demonstrations.
AP Photo/Sebastian Scheiner
Anti-government protesters, one showing a defaced poster of Egyptian President Hosni Mubarak and reading "Oppressor and thief", gather in Tahrir Square in Cairo, Egypt, Friday, Feb. 4, 2011.
Getty Images/Marco Longari
Anti-Egyptian government demonstrators hurl stones at pro-government opponents during clashes at Cairo's Tahrir square on Feb. 3, 2011 on the 10th day of protests calling for the ouster of embattled President Hosni Mubarak.
AP Photo/Tara Todras-Whitehill
A suspected pro-government supporter is carried away by anti-government protesters, in Cairo's main square, Egypt, Feb. 3, 2011.
Getty Images/Mohammed Abed
Egyptian anti-government demonstrators battle pro-government opponents (unseen) in Cairo's Tahrir square on Feb. 3, 2011 on the 10th day of protests calling for the ouster of embattled President Hosni Mubarak.
AP Photo/Lefteris Pitarakis
Pro-government protesters, below, on the bridge, hurl stones and chant slogans at anti-government demonstrators, top, behind barricades, near Tahrir square, the center of anti-government demonstrations, in Cairo, Egypt, Feb. 3, 2011.
Getty Images/John Moore
An anti-government protester pleads with Egyptian army soldiers to stop the violence on Feb. 3, 2011 in Cairo, Egypt. The Army positioned tanks between the protesters who had been battling with supporters of President Hosni Mubarak for the second day in and around Tahrir Square in Cairo.
AP Photo/Victoria Hazou
Anti-government demonstrators grab a man, center, they suspect to be a supporter of Egyptian President Hosni Mubarak in Cairo's Tahrir Square, Egypt, Feb. 3, 2011.
Getty Images/Miguel Medina
An anti-government protester holds stones in his hand during clashes with opponents on February 3, 2011 in Cairo's central Tahrir square where crowds have gathered for days calling for the ouster of President Hosni Mubarak.
AP Photo/Tara Todras-Whitehill
An injured anti-government protester is carried past an armored army vehicle during clashes in Tahrir, or Liberation square, in Cairo, Egypt, Feb. 2, 2011.
Getty Images/Marco Longari
Egyptian protesters opposed to President Hosni Mubarak take cover and throw stones as they clash with pro-Mubarak protesters in Cairo's Tahrir square on Feb. 2, 2011.
AP Photo/Tara Todras-Whitehill
An anti-government protester displays an Egyptian flag, covered with blood, during clashes in Tahrir, or Liberation Square, in Cairo, Egypt, Feb. 2, 2011.
AP Photo/Tara Todras-Whitehill
Demonstrators use sticks during clashes between pro-government supporters and anti-government protestors in Cairo, Egypt, Feb. 2, 2011.
AP Photo/Tara Todras-Whitehill
An anti-government protester carries rocks during clashes in Tahrir, or Liberation square, in Cairo, Egypt, Feb. 2, 2011.
Getty Images/Peter Macdiarmid
An anti-government protestor holds a cloth to his head injury after clashes with supporters of President Mubarak in Tahrir Square on Feb. 2, 2011 in Cairo, Egypt.
AP Photo/Ahmed Ali
Stones fly through the air as supporters of President Hosni Mubarak, foreground , fight with anti-Mubarak protesters, rear, standing on army tanks in Cairo, Egypt, Feb. 2, 2011.
AP Photo/Lefteris Pitarakis
A man takes shelter behind a fence during clashes betwee pro-government supporters and anti-government protestors in Cairo's main square, Egypt, Feb. 2, 2011.
AP Photo/Ben Curtis
Pro-government demonstrators, below, and anti-government demonstrators, above, clash in Tahrir Square, the center of anti-government demonstrations in Cairo, Egypt, Feb. 2, 2011.
AP Photo/Lefteris Pitarakis
Supporters of President Hosni Mubarak fight with anti-Mubarak protesters in Cairo, Egypt, Feb. 2, 2011. In chaotic scenes, the two sides pelted each other with stones, and protesters dragged attackers off their horses. Arabic at background, " down Mubarak".
AP Photo/Amr Nabil
Supporters of President Hosni Mubarak, including some riding horses and camels and wielding whips, march towards anti-Mubarak protesters in Cairo, Egypt, Feb. 2, 2011.
AP Photo/Lefteris Pitarakis
Effigies of Egyptian President Hosni Mubarak can be seen hanging from traffic lights, as Egyptian anti-government protesters gathered in Tahrir (Liberation) Square watch U.S. President Barack Obama, not seen, live on a TV broadcast from Washington, speaking about the situation in Egypt, Feb. 2, 2011.
AP Photo/Victoria Hazou
Clerics from Al Azhar Islamic university, lined up at center, address the crowd in Tahrir, or Liberation Square, in Cairo, Egypt, Feb. 1, 2011.
AP Photo/Victoria Hazou
An effigy of Egyptian President Hosni Mubarak hangs over demonstrators in Tahrir, or Liberation, Square, in Cairo, Egypt, Feb. 1, 2011.
AP Photo/Lefteris Pitarakis
A demonstrator holds a poster showing Egyptian President Hosni Mubarak and reading "Leave oppressor" in Tahrir, or Liberation,Square, in Cairo, Egypt, Feb. 1, 2011.
Getty Images/Khaled Desouki
An engaged Egyptian couple join thousands of others as they gather in Cairo's Tahrir Square heeding a call by the opposition for a "march of a million" to mark a week of protests calling for the ouster of Hosni Mubarak's long-term regime, on Feb. 1, 2011.
Getty Images/Marco Longari
Egyptian Muslim clerics join a demonstration on Feb. 1, 2011, at Cairo's Tahrir Square as massive tides of protesters flooded Cairo for the biggest outpouring of anger yet in their relentless drive to oust President Hosni Mubarak's regime.
Getty Images/Marco Longari
Egyptians shout slogans as they gather in Cairo's Tahrir Square heeding a call by the opposition for a "march of a million" to mark a week of protests demanding for the ouster of Hosni Mubarak's long term regime, on Feb. 1, 2011.