AdvertisementWill Chemical Weapons Change U.S. Policy Toward Syria?April 26, 2013Greg MyrefacebookEmailThe White House said this week that it believes Syria has been using chemical weapons, but President Obama has not said how the U.S. might respond. Here, rebel fighters in Syria prepare to launch of a rocket in the northern Syrian city of Aleppo, on April 21. The rebels have also accused the Syrian government of employing chemical weapons. (AFP/Getty Images)