A convoy of U.N. vehicles with chemical weapons experts on board head out on Friday to do more work as the investigate allegations of chemical weapons use in near Damascus. Louai Beshara /AFP/Getty Images hide caption

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A rebel fighter cleans his weapon in the northern Syrian city of Aleppo Friday. Syria's civil war continues, even as the country follows a schedule of releasing information on its chemical weapons program. AFP/AFP/Getty Images hide caption

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U.N. Secretary-General Ban Ki-moon, who received the report on Syria's chemical weapons over the weekend from professor Ake Sellstrom, expressed his "profound shock and regret" at its findings. Paulo Filgueiras/UN Photo hide caption

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Secretary of State John Kerry discusses the U.S.-Russia plan to eliminate Syria's chemical weapons with top British diplomat William Hague (left) and French diplomat Laurent Fabius, on Monday. Former weapons inspector David Kay says the plan includes "unrealistic" deadlines. Kenzo Tribouillard/AFP/Getty Images hide caption

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Secretary of State John Kerry and Russian Foreign Minister Sergei Lavrov announced a plan to eliminate Syria's chemical weapons arsenal from Geneva on Saturday. Larry Downing/AFP/Getty Images hide caption

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A Free Syrian Army fighter looks through the scope of his sniper rifle at an area controlled by forces loyal to President Bashar Assad in Aleppo. Reuters/Landov hide caption

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In Washington, D.C., this week, there have been demonstrations both in favor of and against a military strike on targets in Syria. Outside the White House on Monday, supporters of Syrian President Bashar Assad waved a Syrian flag with his face on it. Jewel Samad/AFP/Getty Images hide caption

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President George W. Bush receives a tour of nuclear material surrendered by Libya and flown to the Oak Ridge National Laboratory, a U.S. facility in Oak Ridge, Tenn., in 2004. Tim Sloan/AFP/Getty Images hide caption

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Syrian Foreign Minister Walid al-Moualem (left) and Russian Foreign Minister Sergey Lavrov in Moscow on Monday. Yuri Kadobnov /AFP/Getty Images hide caption

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U.S. Secretary of State John Kerry delivers a statement about the use of chemical weapons in Syria at the Department of State last week. Chip Somodevilla/Getty Images hide caption

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