president obama said this about syria s use of chemical weapons. we have been very clear to the assad regime, but also to other players on the ground that a red line for us is we start seeing a whole bunch of chemical weapons being moved around or being utilized. that would change my cal kuls that would change my equation. chemical weapons were used. in the weeks and months after that the president repeatedly insisted assad s days in power were numbered. i m confident that assad s days are numbered. fast forward to this week and a day after president obama met with russia leader vladimir putin, russia acts on its own to start an attack. not on isis, but on syrian rebels who want to take assad out of power. including the u.s.-supported free syrian army. leaving u.s. officials today scrambling. we have fox team coverage. kevin cork is at the white house