18 Days: A Look Back At The Egyptian Revolution

Demonstrators clash with police in central Cairo on January 25, 2011. The protesters were inspired by the uprising in Tunisia that led to the ouster of Zine El Abidine Ben Ali.

An antigovernment protester defaces a picture of President Hosni Mubarak in Alexandria on January 25, 2011.

Police use a water cannon against antigovernment protesters in downtown Cairo on January 25, 2011.

Demonstrators protest near police on January 25, 2011, to demand the ouster of Mubarak and call for reforms.

A protester attends to an injured man during clashes in Cairo on January 28, 2011.

Egyptians gather around the burning headquarters of the ruling National Democratic Party in Cairo on January 28, 2011.

Egyptian protesters run for cover as police open fire on crowds in central Cairo on January 29, 2011.

Protesters carry the body of a man killed during an attempt to storm the Interior Ministry in Cairo on January 29, 2011.

An Egyptian man displays empty bullet cartridges in Cairo’s Tahrir Square on January 29, 2011.

Egyptian demonstrators gather around a wounded comrade shot by police during clashes near Tahrir Square on January 29, 2011.

An Egyptian civilian kisses an army soldier after troops took position at major junctions in central Cairo on January 29, 2011.

Hungry and thirsty protesters reach out for food and drink during mass demonstrations in Tahrir Square on February 8, 2011.

An injured protester takes part in mass demonstrations in Tahrir Square on February 9, 2011.

President Hosni Mubarak speaks to the nation on February 10, 2011. It was thought Mubarak would announce he was stepping down, but protesters left disappointed.

Demonstrators react as they listen to Mubarak's speech in front of a big screen in Tahrir Square on February 10, 2011.

An Egyptian soldier is mobbed by celebrating protesters in Tahrir Square on February 10, 2011.

Demonstrators crowd Cairo's Tahrir Square on February 10, 2011.

Egyptian antigovernment bloggers work on their laptops from Cairo's Tahrir Square on February 10, 2011.

Antigovernment protesters march in the coastal city of Alexandria on February 11, 2011.

An Egyptian flag with January 25 -- the date the uprising started -- written on it is seen amid the crowd near army tanks on Tahrir Square on February 11, 2011.

Antigoverment demonstrators flood Tahrir Square on February 11, 2011.

Opposition supporters attend Friday Prayers on Tahrir Square on February 11, 2011.

Protesters demonstrate by raising their shoes in front of the Egyptian national TV building in Cairo on February 11, 2011.

Protesters celebrate in Tahrir Square after the announcement by Vice President Omar Suleiman that Mubarak had stepped down on February 11, 2011.

Protesters celebrate in Tahrir Square after the announcement of Mubarak's resignation on February 11, 2011.