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A Libyan anti-goverenment protester holds a sign calling for the ouster of Libyan leader Moamer Kadhafi during a rally in the eastern city of Benghazion February 27. The US on Monday told Moamer Kadhafi he must "go now," repositioned forces near Libya and raised the prospect of exile for its foe, as it cranked up pressure on his fragile regime. (AFP/File/Patrick Baz)

Libyan children with their faces painted in the colors of the old Libyan flag, in Benghazi, east of Libya, on Monday Feb. 28, 2011. The United States pressedits European allies on Monday to set tough sanctions on the Libyan government, while doubts emerged about the feasibility of a proposed no-fly zone to prevent Moammar Gadhafi's regime from launching aerial attacks against protesters. (AP Photo/Hussein Malla)

Anti-Libyan Leader Moammar Ghadafi protesters silhouetted through the old Libyan flag, in Benghazi, east of Libya, on Monday Feb. 28, 2011. The UnitedStates pressed its European allies on Monday to set tough sanctions on the Libyan government, while doubts emerged about the feasibility of a proposed no-fly zone to prevent Moammar Gadhafi's regime from launching aerial attacks against protesters. (AP Photo/Hussein Malla)

An anti-Libyan Leader Moammar Gadhafi protester shouts slogans during a protest, in Benghazi, east of Libya, on Monday Feb. 28, 2011. The United Statespressed its European allies on Monday to set tough sanctions on the Libyan government, while doubts emerged about the feasibility of a proposed no-fly zone to prevent Moammar Gadhafi's regime from launching aerial attacks against protesters. (AP Photo/Hussein Malla)

A Libyan boy sits near to a graffiti depicting Libyan Leader Moammar Gadhafi, in Benghazi, east of Libya, on Monday Feb. 28, 2011. The United States pressedits European allies on Monday to set tough sanctions on the Libyan government, while doubts emerged about the feasibility of a proposed no-fly zone to prevent Moammar Gadhafi's regime from launching aerial attacks against protesters. (AP Photo/Hussein Malla)

Anti-Libyan Leader Moammar Gadhafi women display their sons' portraits who were killed during the recent demonstrations, in Benghazi, east of Libya, onMonday Feb. 28, 2011. The United States pressed its European allies on Monday to set tough sanctions on the Libyan government, while doubts emerged about the feasibility of a proposed no-fly zone to prevent Moammar Gadhafi's regime from launching aerial attacks against protesters. (AP Photo/Hussein Malla)

Anti-Libyan Leader Moammar Gadhafi protesters display the old Libyan flag and gesture, in Benghazi, east of Libya, on Monday Feb. 28, 2011. The UnitedStates pressed its European allies on Monday to set tough sanctions on the Libyan government, while doubts emerged about the feasibility of a proposed no-fly zone to prevent Moammar Gadhafi's regime from launching aerial attacks against protesters. (AP Photo/Hussein Malla)

Anti-Libyan Leader Moammar Gadhafi protesters display posters during a protest, in Benghazi, east of Libya, on Monday Feb. 28, 2011. The United Statespressed its European allies on Monday to set tough sanctions on the Libyan government, while doubts emerged about the feasibility of a proposed no-fly zone to prevent Moammar Gadhafi's regime from launching aerial attacks against protesters. (AP Photo/Hussein Malla)

An anti-Libyan Leader Moammar Gadhafi protester shouts slogans during a protest, in Benghazi, east of Libya, on Monday Feb. 28, 2011. The United Statespressed its European allies on Monday to set tough sanctions on the Libyan government, while doubts emerged about the feasibility of a proposed no-fly zone to prevent Moammar Gadhafi's regime from launching aerial attacks against protesters. (AP Photo/Hussein Malla)

An anti-Libyan Leader Moammar Gadhafi protester is silhouetted through the old Libyan flag, in Benghazi, east of Libya, on Monday Feb. 28, 2011. The UnitedStates pressed its European allies on Monday to set tough sanctions on the Libyan government, while doubts emerged about the feasibility of a proposed no-fly zone to prevent Moammar Gadhafi's regime from launching aerial attacks against protesters. (AP Photo/Hussein Malla)

A Libyan boy sits in front of a graffiti depicting Libyan Leader Moammar Gadhafi, in Benghazi, east of Libya, on Monday Feb. 28, 2011. The United Statespressed its European allies on Monday to set tough sanctions on the Libyan government, while doubts emerged about the feasibility of a proposed no-fly zone to prevent Moammar Gadhafi's regime from launching aerial attacks against protesters. (AP Photo/Hussein Malla)

A general view of an oil refinery of the Sirte Libyan oil national company in Brega, 200 kms west of the eastern city of Benghazi, on February 26. Libya'sopposition said Monday it was resuming oil exports suspended during anti-regime protests and had loaded a tanker with one million barrels of crude for China. (AFP/File/Gianluigi Guercia)

Libyan anti-Kadhafi protesters wave their old national flag while standing atop an abandoned army tank in the eastern Libyan city of Benghazi as worldpowers ramped up pressure on Kadhafi's regime. A military no-fly zone over Libya is unlikely to get off the ground as several allies are balking at the plan, Foreign Affairs Minister Lawrence Cannon said Monday. (AFP/Patrick Baz)

Libyan protesters tear a poster of leader Moamer Kadhafi in the eastern Libyan city of Benghazi as world powers ramped up the pressure on Kadhafi'sregime. The United States said it received word Monday that Libya has got rid of its ambassador in Washington after he defected to the opposition, and has now replaced him with a regime supporter. (AFP/Patrick Baz)

Libyan anti-government protesters wave their old national flag during a rally the eastern Libyan city of Benghazi. US President Barack Obama Monday thankedCanadian Prime Minister Stephen Harper for clamping sanctions on Libya's Moamer Kadhafi, and both leaders vowed to support sweeping change in the Middle East. (AFP/Patrick Baz)

Benghazi demo : Libyan protesters step on a poster of leader Moamer Kadhafi in the eastern Libyan city of Benghazi.… (AFP/Patrick Baz)

Libyan protesters tear up a poster of the north African leader Moamer Kadhafi in the eastern Libyan city of Benghazi. Rights groups say at least 1,000people have been killed in Libya in a brutal crackdown by forces loyal to Kadhafi on pro-democracy demonstrators who took to the streets nearly two weeks ago in the wake of upheavals in neighboring Egypt and Tunisia. (AFP/Patrick Baz)

A poster mocking Libyan leader Muamar Kadhafi is seen during a protest against the North African strongman. Kadhafi has insisted his people loved him butwas slammed as "delusional" by the US. (AFP/File/Elmer Martinez

An image taken from Libyan state television shows Libyan leader Moamer Kadhafi addressing loyalists of his regime during a public rally in Tripoli. Kadhafi told his supporters that Al-Qaeda was behind a popular uprising against his 41-year rule in the North African nation. (AFP/Libyan TV/-)

A crowd of several hundred pro-Kadhafi supporters rally at the site where a petrol tanker exploded on March 2, near the compound of Libyan leader MoamerKadhafi in Tripoli. Two US warships are heading towards Libya on the 16th day of unrest in the country. (AFP/Antoine Lambroschini

Smoke rises from a burning fuel truck as traffic is rerouted in Tripoli March 2, 2011. Authorities said the incident was a road traffic accident.… Reuters/Chris Helgren

Fire fighters tackle a burning fuel truck in Tripoli March 2, 2011. Authorities said the incident was a road traffic accident.… Reuters/Chris Helgren

U.S. amphibious assault shit USS Kearsarge sails through the Suez canal in Ismailia , Egypt, Wednesday, March 2, 2011. Egyptian officials say two U.S.warships have entered the Suez Canal on their way to the Mediterranean, moving closer to the Libyan coast after orders from Defense Secretary Robert Gates. (AP Photo)

A rebel army officer teaches the use of an anti-aircraft gun to civilians who have volunteered to join the rebel army at a school in Benghazi March 2,2011. The rebel army is preparing to fight Libyan leader Muammar Gaddafi's forces if necessary, an official in the rebel army said. Reuters/Suhaib Salem

Civilians who have volunteered to join the rebel army register their names in a school in Benghazi March 2, 2011. The rebel army is preparing to fightLibyan leader Muammar Gaddafi's forces if necessary, an official in the rebel army said. Reuters/Suhaib Salem

The Arab Revolution of 2011