It's a sematic word game at this point. Trump wants to continue the war but has to dance around the limitations of the War Powers Act which sets a hard limit of 60 days for wars without Congressional authorization. Since the beginning of the month Trump can only take "defensive actions" and has to leave Iran by the end of the month. Trump'll drag it out for as long as possible, and corrupt the spirit and letter of the law as much as he can until he hits the hard time limit.