President Trump told CNN on Monday that the largest wave of strikes on Iran "has not yet happened" and declined to rule out deploying US ground troops "if necessary." Seventy-two hours earlier, Trump described the operation as lasting "four weeks or less" and explicitly rejected ground forces and nation-building .
The administration's legal framework has not expanded with its ambitions. The stated justification — degradation of an imminent missile threat under Article II authority — was contested before this reversal. Senator Mark Warner, vice-chairman of the Senate Intelligence Committee, stated he had seen no intelligence supporting the "imminent threat" claim . Pentagon officials, in a 90-minute bipartisan congressional briefing, reportedly produced no evidence for it either . A ground deployment would require legal authority the administration has not sought and Congress has not granted.
Both chambers of Congress are scheduled to vote this week on bipartisan war powers resolutions requiring authorisation for further military action. The resolutions need a two-thirds majority to survive a presidential veto — a threshold they are unlikely to reach. But the roll-call votes will fix each legislator's name to a position on a war that has killed four US service members in less than 72 hours . Senator Tim Kaine, a cosponsor: "The Constitution says we're not supposed to be at war without a vote of Congress. The lives of our troops are at risk."
The trajectory from bounded air campaign to open-ended ground contingency has American precedent. The 2001 AUMF, passed to authorise action against al-Qaeda in Afghanistan, was later stretched to cover operations across four additional countries without fresh congressional votes. The 2003 Iraq invasion began with promises of rapid decisive operations; US forces remained for eight years, with 4,431 killed. In each case, operational scope outpaced legal authority — a pattern the three-day reversal from "four weeks or less" to "if necessary" compresses into a single news cycle.
