The Pentagon Is Planning Ground Operations in Iran. Kharg Island Seizure Is on the Table.

The Washington Post reported on March 28-29 that the Pentagon is preparing for "weeks of limited ground operations" in Iran. The plans include seizure of Kharg Island and raids on coastal sites near the Strait of Hormuz. Special operations forces and conventional infantry are involved. The 31st MEU (approximately 3,500 Marines and sailors) has already arrived in theater aboard USS Tripoli.

Trump has not approved the plans. The White House says the Pentagon is providing "maximum optionality." Iran warned against any ground invasion.

This is the escalation threshold that changes everything. Air strikes degrade capability. Ground operations seize territory. The difference between bombing Kharg Island (which the US has deliberately avoided to prevent $150 oil) and occupying Kharg Island is the difference between disruption and control. Seizure of Kharg, which handles 90% of Iran's oil exports, would give the US physical control over Iran's primary revenue source.

Why Kharg Island?

Three reasons, in descending order of honesty.

The stated reason: Kharg is a military objective. Its oil loading terminals support the IRGC navy and the mine-laying operations that closed Hormuz. Seizing it removes a military asset.

The real reason: leverage. Holding Kharg gives the US a hostage that matters more to Iran than any amount of bombing. Iran can rebuild air defenses (2-5 years). It can reconstitute its navy (5-10 years). It cannot replace the infrastructure that generates 90% of its oil export revenue if the US Marines are sitting on it.

The unstated reason: it might be the only way to actually reopen Hormuz. The mines can't be cleared while Iran keeps laying them by rocket from shore. The insurance market won't normalize while the threat persists. Seizing the coastal sites near Hormuz and Kharg removes Iran's ability to deny the strait. Physical control of the chokepoint is the brute-force solution to a problem that diplomacy and deadline extensions haven't solved.

What are the risks?

The 31st MEU has 3,500 Marines. Iran's IRGC ground forces number approximately 190,000. Kharg Island is 25 km from the Iranian mainland. The Ghadir-class submarines that operate in Hormuz's shallow waters can reach Kharg. The mine field that closes the strait to commercial shipping also threatens Marine amphibious ships.

A ground operation in Iran is not Iraq 2003. Iran's terrain is mountainous. Its population is 88 million (3x Iraq's at invasion). Its military, while 85% degraded in air defense and naval capability, retains ground forces that haven't been engaged. The 31 Mosaic Defense units were designed for exactly this scenario: distributed defense against a technologically superior invading force.

"Weeks, not months" is one official's timeline. "A couple of months" is another's. The gap between these estimates is the gap between a raid and an occupation. A raid (seize Kharg, destroy coastal missile sites, withdraw) is operationally feasible. An occupation (hold Kharg, maintain coastal control, defend against counterattack) requires reinforcement that 41% of the Navy already committed to the Gulf may not be able to provide.

The Houthi activation on Day 28 adds a second naval threat. If the 31st MEU is conducting amphibious operations near Hormuz while Houthis attack Red Sea shipping, the Navy is fighting on two maritime fronts simultaneously. The force structure was not designed for this.

Rubio told the G7 the war will last "2-4 more weeks." Ground operations in Iran do not fit a 2-4 week timeline. Either Rubio's timeline is wrong or the ground plans are contingency options that won't be executed. One official told WaPo: "maximum optionality." Translation: everything is planned, nothing is decided.

FAQ

Would seizing Kharg crash the oil market?

Paradoxically, it might stabilize it. Kharg under US control means oil exports resume under American supervision instead of Iranian. If the US operates the loading terminals (even temporarily), Brent could drop $20-30 as the market prices in supply restoration. The risk is the seizure itself: if fighting damages the terminals, Chatham House's $150 scenario materializes.

Can 3,500 Marines hold Kharg against IRGC counterattack?

Short-term, yes (with air superiority and naval support). Medium-term, it depends on reinforcement. Kharg is 25 km offshore. Iran has shore-based anti-ship missiles, Ghadir submarines, and speedboat swarm capability. The Marines would need continuous resupply by sea through waters Iran has mined. The logistics are the vulnerability, not the initial seizure.

Does this mean the war is escalating, not winding down?

The plans coexist with Rubio's "2-4 weeks" de-escalation timeline. This is consistent with Trump's approach throughout the war: escalate options while extending deadlines. The ground plans are leverage for the Islamabad talks. "Accept our terms or we take your oil island" is a more compelling negotiating position than "accept our terms or we extend the deadline again."