NEW : Syrian minister denies government forces used chemical weapons . Three were reported killed in the early Wednesday attack in U.S. ' outskirts . The government uses the term `` terrorists '' to describe rebel forces . The opposition says that Syrian forces used the nerve gas sarin as a weapon . U.S. prime minister talks with Syrian leader , UK president about `` all the options ''
NEW : Syrian minister denies government forces used chemical weapons . Three were reported killed in the early Wednesday attack in U.S. ' outskirts . The opposition says that Syrian forces used the nerve gas sarin as a weapon . U.S. prime minister talks with Syrian leader , UK president about `` all the options ''