NEW : Syrian opposition say they have formed a government coalition . Tensions between the United States and Syria escalated after the Syrian ambassador to the U.S. was called Friday to the State Department over an attempted attack a day earlier in Damascus on American Ambassador Robert Ford , spokeswoman Victoria Nuland told reporters . NEW : Many members have yet to serve on the new Syrian National Council . Saturday : Activists say eight people die in clashes and random attacks on Saturday . Syrian ambassador summoned over attack against U.S. ambassador , an activist said .
NEW : Syrian opposition say they have formed a government coalition . NEW : Many members have yet to serve on the new Syrian National Council . Saturday : Activists say eight people die in clashes and random attacks on Saturday . Syrian ambassador summoned over attack against U.S. ambassador , an activist said .