Why Trump Is Hesitating on a Bigger Strike: Iran's Underground 'Missile Cities' Can Rebuild Faster Than the US Can Bomb Them

President Trump is reportedly weighing whether to expand the US military campaign against Iran in the coming days — a decision complicated, according to CNN's reporting on internal CIA and Defense Intelligence Agency assessments, by a blunt conclusion from America's own spy agencies: the kind of bombing campaign the US has been running is unlikely to meaningfully shift Iran's negotiating posture. That's a striking thing for the intelligence community to tell a wartime president two weeks into a renewed bombing campaign, and it points to a structural problem more strikes alone may not solve.

The problem has a name and a location: Qeshm Island, off Iran's southern coast, home to what Iranian state media itself has called an underground "missile city." The facility, dug into the island's geology, houses Qadr-380 anti-ship cruise missiles that can be launched in under five minutes, carry anti-jamming guidance, and reach targets more than 1,000 kilometers away — all from bunkers hardened against exactly the kind of airstrikes the US has been conducting. Qeshm isn't an isolated case; it's one node in a broader IRGC Navy doctrine built around fortified island outposts, deep-buried anti-ship missile sites, and mobile launchers designed specifically to survive an air campaign and keep firing afterward.

The US has already tested this doctrine once this year, and the results are instructive about what "success" against it actually looks like. When Washington launched Operation Epic Fury on February 28 to reopen a Strait of Hormuz that Iran had shut using swarms of fast-attack boats, seafloor limpet mines, and buried anti-ship missile batteries, CENTCOM says it struck more than 300 targets, including over 60 IRGC small boats, using a mix of autonomous drones, bunker-buster bombs, and coordinated airpower. By most accounts, that campaign genuinely broke Iran's swarm tactics and reopened the strait. And yet, five months later, the underlying industrial capacity that built those defenses in the first place evidently regenerated enough capability that the war is still going, Iran is still contesting Hormuz, and the intelligence community is now telling the White House that repeating the same playbook won't finish the job. Iran's ability to manufacture and repair this kind of dispersed, hardened infrastructure in a matter of weeks rather than years appears to be the actual center of gravity here — not any single missile city, but the industrial base underneath it.

That regeneration problem intersects with a second constraint this outlet has covered in detail: American munitions stockpiles. CSIS's own assessment puts US expenditure at more than half of available stock for several categories of precision interceptors and standoff munitions since the war began, with three-plus years needed to rebuild to pre-war levels. Every additional round of strikes against a target set that can partially regrow within weeks draws further against an arsenal that takes years to replenish — a trade that looks worse the longer the underlying Iranian capacity keeps coming back.

Iran, for its part, isn't just absorbing strikes and rebuilding quietly. US officials describe Tehran as escalating horizontally rather than matching Washington's vertical escalation — rather than directly countering deeper US strikes inside Iran, Iran has been hitting American allies and civilian-adjacent infrastructure across the Gulf, a strategy that seems calculated to pressure US partners into pushing Trump toward de-escalation rather than further bombing. That pressure appears to be landing: reporting indicates growing allied appetite for a negotiated deal that reopens Hormuz without requiring the kind of expanded strike campaign currently on Trump's desk.

Put together, the calculation facing the White House is genuinely difficult rather than merely political. A bigger strike campaign risks burning through already-depleted stockpiles against a target set with demonstrated regenerative capacity, on the intelligence community's own assessment that it won't change Iran's calculus — while doing nothing, or too little, leaves Hormuz contested and allies exposed. That's not an easy call for any White House, and it's the specific reason this week's reassessment reads less like hesitation than like a president confronting a target that keeps rebuilding faster than it can be destroyed.