proportional response designed to deter syrian regime from using chemical weapons again. where he is meeting with chinese premier president trump says strikes were in vital national security interest of the united states. >> there can be no dispute that syria used chemical weapons, violated its obligations under the chemical weapons convention and ignored the urging of the u.n. security council. years of previous attempts at changing assad's behavior have all failed and failed very dramatically. as a result, the refugee crisis continues to deepen and the region continues to destabilize threatening the united states and its allies. tonight i call on all civilized nations to join us in seeking to