A claim that the Pentagon has weighed offensive nuclear strikes has turned into a demand that the president be removed from office — a serious escalation in the fight over who controls America's nuclear weapons.

• Internal Pentagon meetings and briefing slides reportedly included plans for using nuclear weapons first, not just in retaliation.
• Marjorie Taylor Greene raised the same claim weeks ago and was waved off as wrong.
• Any president who seriously considers striking first should be pushed out of office right away, the argument goes, because that is the one line that cannot be crossed.
• Tolerating that kind of planning from aides or staff is treated as proof a leader is unfit to hold the job.

Outlook: Expect more pressure to confirm what was actually in those briefings, and louder calls in Washington to rein in the president's nuclear authority.