The devil was in the detail he said he would consult with attorneys and if they said it was legal he would do it. I think it’s going to be hard to find an Air Force lawyer who says use of a nuclear weapon is illegal?
This jerk knows it, there is no time to consult a lawyer to determine if the President of the United States command is "lawful" or legal. That is not this buffoons job: his job is to fully OBEY and carry out the orders of The Commander in Cheif, period! The President and the Joint Chiefs of Staff have the facts, not this guy.
He has stated he can not and will not do his job as ordered and should therefore be removed from his position and post ASAP for national security reasons alone.