President Obama gestures during his appearance Tuesday (Oct. 25, 2011) on NBC's The Tonight Show with Jay Leno.

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Former Libyan leader Moammar Gadhafi.

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itoggle caption Abdel Magid Al Fergany/AP

In Sirte, fighters loyal to the new government celebrate after the town's defenses finally fell, and former leader Moammar Gadhafi was killed.

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Anti-Gaddafi fighters celebrate the fall of Sirte in the town October 20, 2011.

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itoggle caption Esam Omran Al-Fetori/Reuters /Landov

On a morning of fierce street fighting, a wounded man is wheeled into a field hospital outside Sirte. The city was rocked by explosions, and Libyan National Transitional Council fighters were targeted by pro-Gadhafi snipers.

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