The Pentagon is preparing for ground operations inside Iran that could stretch on for weeks, according to officials, as thousands of U.S. Marines pour into the Middle East and the monthlong conflict enters a new and more dangerous phase.

The USS Tripoli arrived in the region on Friday, carrying an additional 3,500 sailors and Marines. The Tripoli Amphibious Ready Group, along with elements of the 31st Marine Expeditionary Unit, was ordered to the Middle East almost two weeks ago after conducting exercises around Taiwan. The USS Boxer and two other ships, along with another Marine Expeditionary Unit, have also been ordered to the region from San Diego.

U.S. Central Command confirmed that the Tripoli also brings transport and strike fighter aircraft, as well as amphibious assault assets. Meanwhile, sources told the AP on Tuesday that some 10,000 troops from the 82nd Airborne Division are being prepared for deployment, as President Trump mulls whether to send them.

The White House keeps options open

Press Secretary Karoline Leavitt warned Tuesday that if the regime in Tehran did not bring its threats and nuclear ambitions to an end, the President is "prepared to unleash hell." But in a statement to the Washington Post, she offered a more measured framing:

"It's the job of the Pentagon to make preparations in order to give the Commander in Chief maximum optionality. It does not mean the President has made a decision."

A former senior defense official familiar with the plans struck a different tone, making clear that this buildup is not improvised. "This is not last-minute planning," the official told the Post. "We've looked at this. It's been war-gamed."

The distinction matters. Preparation is not escalation. It is what serious governments do when they are fighting a war they intend to win. The administration is positioning itself to act decisively if it chooses to, while keeping diplomatic channels alive. That is not a contradiction. That is leverage. The Daily Mail reported.

A month of war, and the toll is mounting

After roughly four weeks of conflict with Iran, the human cost is real and growing. At least 13 U.S. soldiers have been killed, including six in a plane crash in Iraq and six in a drone attack on Port Shuaiba. Army Sgt. Benjamin N. Pennington, 26 years old, was killed following an earlier March 1 strike on Prince Sultan Air Base in Saudi Arabia, days after he was wounded. That same strike damaged five U.S. refueling aircraft.

On Friday, another Iranian missile strike hit Prince Sultan Air Base, wounding U.S. soldiers and causing significant damage to at least two KC-135 refueling planes. Over 300 U.S. troops have been wounded in the ongoing conflict, with about 225 suffering traumatic brain injuries from missile blasts.

These numbers deserve gravity, not spin. Every casualty is a family that receives the worst phone call imaginable. The conservative case for strength abroad has never been a bloodless abstraction. It is the recognition that American power, applied with purpose, prevents worse outcomes. That calculation demands honesty about costs.

Rubio: not a prolonged conflict

Secretary of State Marco Rubio, speaking at a meeting in France where U.S. allies gathered to discuss the economic toll of the war, said the conflict is not projected "to be a prolonged conflict." He said the operation is ahead of schedule based on the administration's assessment, and that the U.S. "can achieve all of our objectives without ground troops."

Those comments came on Friday, the same day Trump hinted the war was drawing to a close:

"It's sort of finished, but it's not finished. It's got to be finished."

The ground operations planning does not necessarily contradict Rubio's claim. Officials have described the timeline as "weeks, not months," though one source suggested "a couple of months." Having the option for ground forces and needing them are two different things. What matters is that the Pentagon is not caught flat-footed if diplomacy stalls or conditions shift.

The Houthi threat and the chokepoint crisis

The war with Iran does not exist in a vacuum. Iran's proxy group in Yemen, the Houthis, who have held the capital Sanaa since 2014, are now threatening to widen the conflict by strangling global commerce at sea.

Houthis' deputy information minister Mohammed Mansour said Saturday:

"We are conducting this battle in stages, and closing the Bab al-Mandeb Strait is among our options."

That is not an idle threat. The numbers illustrate why:

• A fifth of the world's oil passes through the Strait of Hormuz
• Nearly a third of the global fertilizer trade moves through the same waterway
• The Bab al-Mandeb Strait is just 18 miles wide
• Ten percent of global seaborne trade passes through the Red Sea
• A fifth of the world's container traffic transits the Red Sea
• Ten percent of crude oil moves through the Red Sea

Between 2023 and 2025, Houthi attacks struck more than 100 merchant vessels, sinking two ships and killing four sailors. Ships transiting the Suez Canal fell from 26,000 to 12,700 during that period. The damage to global trade was enormous then. A coordinated blockade of both the Strait of Hormuz and the Bab al-Mandeb would be exponentially worse.

Mohamad Elmasry, a professor at the Doha Institute for Graduate Studies, described the Houthis entering the conflict as "very significant" and laid out the cascading risk plainly:

"We have seen over the past two and a half years that the Houthis have significant power. If they decided to move to shut down the Bab al-Mandeb Strait, the Red Sea and, ultimately, the Suez Canal, we would have two major choke points [closed] along with the Strait of Hormuz."

Ibrahim Jalal, a senior researcher on Yemen and the Gulf, called the threat "very alarming, especially when it's compounded by a coordinated multi-strait blockade." He told Al Jazeera:

"This is exactly the theatre that Iran has been preparing for from what we have seen in the past few years with the Houthis."

This is the architecture of asymmetric warfare. Iran cannot match U.S. military power directly, so it built a network of proxies designed to turn geography into a weapon. The Houthis are not freelancers. They are instruments of Iranian strategy, and their escalation is Tehran's escalation by another name.

Diplomacy and deadlines

The diplomatic track continues to run alongside the military one. Trump's envoy Steve Witkoff said Washington passed a 15-point ceasefire plan to Iran through Pakistan. Iran responded with a five-point counter. Meanwhile, Iranian ambassador to the United Nations in Geneva Ali Bahreini said Tehran has agreed to a UN request to allow both humanitarian aid and agricultural shipments through the Strait of Hormuz, promising to "facilitate and expedite" their passage.

Whether that gesture is genuine or a stalling tactic remains to be seen. Trump has set a clear deadline: if Iran does not fully reopen the Strait of Hormuz by April 6, he will order strikes on the country's energy plants.

That deadline is less than a week away.

The President also declared that Saudi Arabia and Israel should move to normalize relations after the conflict wraps up, pushing the Abraham Accords framework forward. Trump has urged both nations toward normalization for years, and now sees the dismantling of Iranian power as the catalyst:

"We've now taken them out, and they are out bigly. 'We got to get into the Abraham Accords.'"

What comes next

The next week will determine the trajectory of this conflict. Either Iran meets the April 6 deadline, opening a path toward de-escalation, or it doesn't, and the strikes on Iranian energy infrastructure begin. Either the Houthis follow through on their threat to close the Bab al-Mandeb, or they calibrate their provocation below that threshold. Either the 82nd Airborne deploys, or the air campaign proves sufficient.

What is clear is that the administration is not operating from hesitation. Marines are moving. War plans exist and have been gamed out. Deadlines have been set publicly, which means the credibility of American deterrence rides on follow-through.

Thirteen American soldiers are dead. Over 300 are wounded. The Strait of Hormuz, through which a fifth of the world's oil flows, remains contested. Iran's proxies are threatening to shut down a second chokepoint that would paralyze global shipping.

This is not a moment for ambiguity. It is a moment for resolution, and the clock is running.