Red Lines aren’t a dance invitation one accepts or rejects but a Notification of Intent to Act which one can take seriously or Dismiss out-of-hand. If certain conditions prevail, Then certain actions Will be taken. No “and or buts.”
It’s no wonder that Washington cannot grasp the import of a Red Line. They take no use of language seriously, even their own. But as a helpful hint, someone might suggest an alternative phrase, one which Washington understands well and practices on the regular: Deal Breaker, instead of Red Line, with Peace and War being the alternatives.