Air strikes against Iranian targets are comparatively straightforward; mounting a large-scale ground invasion is another matter entirely. Political resistance in the United States, frictions within the Gulf, and Iran’s geography and logistics make a conventional land campaign costly, slow and politically fraught.
Washington faces growing domestic constraints on expansive military action without clear congressional authorization, and public war-weariness after Iraq and Afghanistan narrows political space for a protracted ground operation. Even staunch U.S. allies and Arab neighbours are hedging: Gulf Cooperation Council governments have condemned Iranian strikes in strong language but remain cautious about joining a ground campaign that could inflame domestic opinion and regional stability.
Israel appears ready to back — and may press for — robust ground options, but any U.S.-led operation would depend on basing and logistical support from regional partners. Controlling the Strait of Hormuz and securing ports such as Bandar Abbas, Chabahar and Konarak would be essential preconditions, yet seizing and holding those maritime chokepoints requires time, ships and sustained coalition access that the U.S. could not guaranteedly assemble at short notice.
Historical benchmarks underline the scale of the challenge. Desert Storm required the rapid deployment of hundreds of thousands of troops and millions of tonnes of supplies over months; Iraq 2003 depended on dense overland supply lines from Kuwait consuming vast amounts of fuel and transport. Modern threats — from suicide and kamikaze drones to anti-access, area-denial capabilities — further complicate sustainment, placing supply convoys and forward bases at persistent risk.
Iran’s internal geography and transport infrastructure are additional constraints. With roughly 177,000 kilometres of roads but only 70–75% paved and a relatively narrow set of well-maintained corridors, coalition forces would face a monumental engineering task to maintain movement and logistics. That work would be magnified if Tehran resorts to asymmetric tactics, mobilises proxy networks across the region, or if contested terrain in the northwest or along the littoral becomes a flashpoint.
The practical upshot is a narrow range of likely U.S. options in the near term: punitive strikes, naval and air interdiction, cyber operations and efforts to degrade Iranian capabilities while avoiding occupation. Only a substantial and sustained deterioration of Iran’s internal cohesion — or a major defeat precipitating regime collapse — would plausibly tilt regional actors to commit to a conventional ground invasion, and even then the costs and risks would be enormous for all parties involved.