The Arab Revolution of 2011

Anti-government protesters shout slogans during a rally to demand the ouster of Yemen's President Ali Abdullah Saleh outside Sanaa University April2, 2011. Embattled Yemeni President Ali Abdullah Saleh thanked thousands of supporters gathered near the presidential palace on Saturday for backing the constitution in a further sign he has no immediate plans to step down. REUTERS/Ammar Awad
An anti-government protestor reacts during a demonstration demanding the resignation of Yemeni President Ali Abdullah Saleh, in Sanaa,Yemen, Saturday,April 2, 2011. (AP Photo/Muhammed Muheisen)
Anti-government protestor shout slogans during a demonstration demanding the resignation of Yemeni President Ali Abdullah Saleh, in Sanaa,Yemen, Saturday,April 2, 2011. Hundreds of thousands of Yemenis packed a square in the capital and marched in villages and cities across the nation on Friday in what appeared to be the largest demonstrations in more than a month of demands the country's longtime ruler Ali Abdullah Saleh step down. (AP Photo/Hani Mohammed)
Anti-government protesters shout slogans during a rally to demand the ouster of Yemen's President Ali Abdullah Saleh, outside Sanaa University April2, 2011. Saleh thanked thousands of supporters gathered near the presidential palace on Saturday for backing the constitution in a further sign he has no immediate plans to step down. REUTERS/Ammar Awad
An anti-government protestor holds up his dagger during a demonstration demanding the resignation of Yemeni President Ali Abdullah Saleh, in Sanaa,Yemen,Saturday, April 2, 2011. Hundreds of thousands of Yemenis packed a square in the capital and marched in villages and cities across the nation on Friday in what appeared to be the largest demonstrations in more than a month of demands the country's longtime ruler Ali Abdullah Saleh step down. (AP Photo/Hani Mohammed
A female anti-government protestor and a child his face painted with the colors of their national flag look on during a demonstration demanding the resignationof Yemeni President Ali Abdullah Saleh, in Sanaa,Yemen, Saturday, April 2, 2011. Hundreds of thousands of Yemenis packed a square in the capital and marched in villages and cities across the nation on Friday in what appeared to be the largest demonstrations in more than a month of demands the country's longtime ruler Ali Abdullah Saleh step down. Markings in Arabic reads on the child's face, ' Leave'. (AP Photo/Muhammed Muheisen
Anti-government protestors react during a demonstration demanding the resignation of Yemeni President Ali Abdullah Saleh, in Sanaa,Yemen, Saturday, April2, 2011. Hundreds of thousands of Yemenis packed a square in the capital and marched in villages and cities across the nation on Friday in what appeared to be the largest demonstrations in more than a month of demands the country's longtime ruler Ali Abdullah Saleh step down. (AP Photo/Muhammed Muheisen) Purchase Cart
Anti-government protestors react during a demonstration demanding the resignation of Yemeni President Ali Abdullah Saleh, in Sanaa,Yemen, Saturday, April2, 2011. Hundreds of thousands of Yemenis packed a square in the capital and marched in villages and cities across the nation on Friday in what appeared to be the largest demonstrations in more than a month of demands the country's longtime ruler Ali Abdullah Saleh step down. Arabic reads on the gloves, ' Leave murderer'. (AP Photo/Muhammed Muheisen)
A Yemeni girl gestures wearing a headband with Arabic reading ' Don't kill my father' while standing in front of female anti-government protestors duringa demonstration demanding the resignation of Yemeni President Ali Abdullah Saleh, in Sanaa,Yemen, Saturday, April 2, 2011. (AP Photo/Muhammed Muheisen)
Female anti-government protestors pray during a demonstration demanding the resignation of Yemeni President Ali Abdullah Saleh, in Sanaa,Yemen, Saturday,April 2, 2011. Hundreds of thousands of Yemenis packed a square in the capital and marched in villages and cities across the nation on Friday in what appeared to be the largest demonstrations in more than a month of demands the country's longtime ruler Ali Abdullah Saleh step down. (AP Photo/Muhammed Muheisen)
A female anti-government protestor chants prayers during a demonstration demanding the resignation of Yemeni President Ali Abdullah Saleh, in Sanaa,Yemen,Saturday, April 2, 2011. Hundreds of thousands of Yemenis packed a square in the capital and marched in villages and cities across the nation on Friday in what appeared to be the largest demonstrations in more than a month of demands the country's longtime ruler Ali Abdullah Saleh step down. (AP Photo/Muhammed Muheisen)
Anti-government protestors react during a demonstration demanding the resignation of Yemeni President Ali Abdullah Saleh, in Sanaa,Yemen, Saturday, April2, 2011. Hundreds of thousands of Yemenis packed a square in the capital and marched in villages and cities across the nation on Friday in what appeared to be the largest demonstrations in more than a month of demands the country's longtime ruler Ali Abdullah Saleh step down. (AP Photo/Muhammed Muheisen
Yemen's President Ali Abdullah Saleh is seen during a rally of supporters in Sanaa April 1, 2011. Embattled Saleh told a huge rally of supporters onFriday that he would sacrifice everything for his country, suggesting he has no plans to step down yet. REUTERS/Khaled Abdullah Purchase Cart
Army soldiers block supporters of President Ali Abdullah Saleh during a rally in Sanaa April 1, 2011. Embattled Saleh told a huge rally of supporters onFriday that he would sacrifice everything for his country, suggesting he has no plans to step down yet. REUTERS/Khaled Abdullah
Army soldiers block supporters of President Ali Abdullah Saleh during a rally in Sanaa April 1, 2011. Embattled Saleh told a huge rally of supporters onFriday that he would sacrifice everything for his country, suggesting he has no plans to step down yet. REUTERS/Khaled Abdullah
Army soldiers block the supporters of President Ali Abdullah Saleh during a rally in Sanaa April 1, 2011. Embattled Saleh told a huge rally of supporterson Friday that he would sacrifice everything for his country, suggesting he has no plans to step down yet. REUTERS/Khaled Abdullah
Supporters of Yemen's President Ali Abdullah Saleh climb flag poles during a rally to show their support in Sanaa April 1, 2011. Embattled Saleh tolda huge rally of supporters on Friday that he would sacrifice everything for his country, suggesting he has no plans to step down yet. REUTERS/Khaled Abdullah
Anti-government protesters prepare to carry an injured fellow protester in Sanaa April 5, 2011. Embattled Yemeni President Ali Abdullah Saleh urged the opposition to join talks to try to end a weeks-old political crisis and called for an end to violence as fresh clashes broke out, killing at least three people. REUTERS/Ammar Awad
Anti-government protesters carry an injured fellow protester in Sanaa April 5, 2011. Three people died and 15 were wounded on Tuesday when supporters of Yemen President Ali Abdullah Saleh clashed with protesters demanding his ouster and an army unit defending them, the defence ministry said. REUTERS/Ammar Awad
A Yemeni medical crew waits for injured anti-government protesters at the entrance of a field hospital during clashes in Sanaa April 5, 2011. Yemeni President Ali Abdullah Saleh urged his opponents on Tuesday to join talks to end a two-month-old political crisis as fresh clashes erupted between his troops and protesters seeking to finish his 32-year rule. REUTERS/Ammar Awad
Anti-government protesters carry an army soldier after he took part in clashes with supporters of Yemeni President Ali Abdullah Saleh in Sanaa April 5, 2011. REUTERS/Khaled Abdullah
A Yemeni soldier standing on a hill overlooking the capital Sanna. Two dissident soldiers and three other people were killed in a firefight in Sanaa on Tuesday between troops and tribesmen close to President Ali Abdullah Saleh, Yemeni security and military sources said. (AFP/File/Ahmad Gharabli)
Anti-government protesters carry an injured fellow protester in Sanaa April 5, 2011. Three people died and 15 were wounded on Tuesday when supporters of Yemen President Ali Abdullah Saleh clashed with protesters demanding his ouster and an army unit defending them, the defence ministry said. REUTERS/Ammar Awad
Anti-government protesters carry an injured fellow protester in Sanaa April 5, 2011. Three people died and 15 were wounded on Tuesday when supporters of Yemen President Ali Abdullah Saleh clashed with protesters demanding his ouster and an army unit defending them, the defence ministry said. REUTERS/Ammar Awad
Anti-government protesters carry an injured fellow protester to a makeshift clinic during clashes in Sanaa April 5, 2011. Three people died and 15 were wounded on Tuesday when supporters of Yemen President Ali Abdullah Saleh clashed with protesters demanding his ouster and an army unit defending them, the defence ministry said. REUTERS/Khaled Abdullah