The Syrian regime calls a new deal on its chemical weapons a victory, in a reaction that came one day after the U.S. and Russia announced the plan. On Saturday, live coverage of the the deal drew the attention of a Damascus flower shop owner. Anwar Amro/AFP/Getty Images hide caption

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A U.S. Marine carries a light flame-thrower while wearing experimental clothing designed to protect against atomic, biological and chemical warfare in 1960. Keystone/Getty Images hide caption

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President Obama's speeches about Syria have at times seemed to reveal his own internal struggle on the topic. Pablo Martinez Monsivais/AP hide caption

itoggle caption Pablo Martinez Monsivais/AP

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

itoggle caption Reuters/Landov

Russia's President Vladimir Putin welcomes President Obama at the start of the G-20 summit on Sept. 5 in St. Petersburg. Russia. Eric Feferburg/AFP/Getty Images hide caption

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Vice President Joe Biden, projected on screens, gestures as he addresses the American-Israeli Public Affairs Committee (AIPAC) 2013 Policy Conference in March. Susan Walsh/AP hide caption

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Russian President Vladimir Putin penned an op-ed in The New York Times to counter President Obama's arguments about possible military strikes against Syria. Klimentyev Mikhail /ITAR-TASS /Landov hide caption

itoggle caption Klimentyev Mikhail /ITAR-TASS /Landov

President Obama walks out of a meeting with the Senate Democratic Caucus at the Capitol on Tuesday. Michael Reynolds/EPA /LANDOV hide caption

itoggle caption Michael Reynolds/EPA /LANDOV

President Obama walks along the West Wing Colonnade toward the Oval Office ahead of Tuesday night's speech on Syria. Pablo Martinez Monsivais/AP hide caption

itoggle caption Pablo Martinez Monsivais/AP

President Obama addresses the nation in a live televised speech from the East Room of the White House on Tuesday. Evan Vucci/Pool/Getty Images 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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