NEW : Syrian opposition says government forces used chemical weapons . CNN could not verify where or when the videos were recorded , and could not confirm the number of casualties . Some civilians were reported killed in the early Wednesday attack in Damascus ' outskirts . The opposition says that Syrian forces used the nerve agent sarin as a weapon . Syrian prime minister talks with Canadian leader , U.S. president about ` ` all the options ''
NEW : Syrian opposition says government forces used chemical weapons . Some civilians were reported killed in the early Wednesday attack in Damascus ' outskirts . The opposition says that Syrian forces used the nerve agent sarin as a weapon . Syrian prime minister talks with Canadian leader , U.S. president about ` ` all the options ''