U.S. ambassador warns Syria Dec 6, 2012 16:40:27 GMT -5 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by bot on Dec 6, 2012 16:40:27 GMT -5 U.S. ambassador warns Syriafrom Politico.com: Politics by Katie GlueckHe says the use of chemical weapons would change the United States' calculations.feeds.politico.com/click.phdo?i=d9c6995e9b3908ce35f57aec060640d5