Senior Defense Department leaders have alerted the White House to substantial risks tied to contemplated military action against Iran, warning that the plans being reviewed could carry steep costs in manpower and materiel.
According to current and former officials, Gen. Dan Caine, chairman of the Joint Chiefs of Staff, has been among the most vocal, flagging the possibility of U.S. and allied casualties, the rapid depletion of air-defense resources, and broader strain on military units. Other senior Pentagon figures have voiced similar cautions. These concerns have been relayed within the Defense Department and raised during National Security Council meetings.
Military planners are assessing a spectrum of options, officials said, from narrowly tailored initial strikes to a multi-day aerial campaign aimed at the Iranian regime. While planners view each option as carrying its own set of risks, officials warned that an extended campaign would be particularly taxing. A longer operation could impose significant costs on U.S. forces and rapidly draw down munitions stockpiles, they said.
Officials emphasized that sustained use of air-defense munitions and other limited-supply items could hamper the military's ability to meet other contingencies. In particular, heavy consumption of such weapons and supplies in a prolonged Iran campaign could affect preparations for a possible future conflict with China, officials told those briefed.
Officials also noted that an extended campaign could complicate efforts to protect regional partners if Iran seeks retaliation. The strains described include the need to maintain defensive coverage for allies while simultaneously prosecuting operations that consume critical resources.
Views from Caine - a military leader regarded by officials as trusted within the administration - and from other Pentagon commanders will be part of the calculus that the president uses to decide whether to order strikes and, if so, what scope those strikes should take. Officials said the president has not yet reached a decision.
Context limitations: The officials cited conveyed these assessments internally and in NSC discussions; no final operational decision has been announced.