I'm more concerned about the rest US Senators who follow his craziness.
Congress can declare war but then it is up to the President to take action. There is not enough time left to allow Barack to mobilize and send troops into a conflict. In 21 days Trump becomes the CIC and would call off any and all hostilities. So really there is nothing to worry about as it would all be for naught. This is all just ignorant political posturing.