A Pentagon assessment said it could take six months to completely clear the Strait of Hormuz of Iranian-laid mines, which could keep oil prices high, the Washington Post reported on Wednesday.

Iran has all but blocked the vital waterway since the start of a war with the United States and Israel, sharply driving up oil and gas prices and disrupting the global economy.

The strait — through which one-fifth of the world’s oil and gas passes in peacetime — has remained largely closed during a shaky ceasefire, with the US imposing its own blockade.

Even if hostilities end and the blockade lifts, it could take months to clear the waterway of mines, according to a Pentagon assessment, the Washington Post reported citing officials close to the discussion.

The assessment added that it was unlikely such an operation would begin before the end of the war.

The six-month estimate was shared with members of the House Armed Services Committee during a classified briefing, the Post reported.

Lawmakers were told that Iran may have placed 20 or more mines in and around the strait, some floated remotely using GPS technology which makes them harder to detect, according to the report.

AFP has contacted the Department of Defense for comment.

Pentagon spokesman Sean Parnell told the Washington Post that its information was “inaccurate.”

Iran’s Revolutionary Guards have warned of a “danger zone” covering 1,400 square kilometres — 14 times the size of Paris — where mines may be present.

Iran’s parliament speaker said the Islamic republic would not reopen the strait as long as the US naval blockade remained.

A spokesman for German transportation giant Hapag-Lloyd cautioned last week that shippers needed details on viable routes as they remain fearful of mines.

When the Hormuz strait briefly reopened at the start of the ceasefire this month, only a few ships trickled through amid fears of attacks or mines.

Earlier in April, the US Navy said its ships transited the waterway to begin removing the mines, but that claim was denied by Iran’s Revolutionary Guard, which threatened any military vessels attempting to cross the channel.

London hosted talks with military planners from over 30 countries starting Wednesday on a UK and France-led multinational mission to protect navigation in the Strait of Hormuz once hostilities end.

The “defensive” coalition is set to discuss plans to reopen the strait and conduct mine clearance operations.

By extending a ceasefire indefinitely with Iran, President Donald Trump appears to be searching for a way out of a costly war, but Tehran may be unwilling to give him a win.

Trump has insisted on maintaining a naval blockade, which Iran is demanding must end before it can consider any agreement to end the conflict launched on February 28 by Israel and the United States.

For Trump, who boasts of his prowess to secure big deals quickly through his team of business buddies, negotiating with Iran’s Islamic republic presents an ultimate contrast — methodical, unyielding diplomats ready to fight for the long haul against what they see as a deceitful enemy.

Trump had raised hopes of progress at a second round of talks in Pakistan, with Vice President JD Vance designated to fly out, but Iran refused to confirm its attendance and Vance stayed home.

With a two-week ceasefire set to end, and Gulf Arab allies of the United States bracing for potential new Iranian strikes, Trump said he was extending the ceasefire because Iran’s leadership, decimated by the war, was “fractured” and needed time to come up with a proposal.

“He really could have doubled down and engaged in more reckless military action. But so far he has stopped digging himself into a deeper hole,” said Alex Vatanka, a senior fellow at the Middle East Institute who studies Iran.

For Trump, who campaigned on promises to shun military interventionism, the war has proven politically disastrous, facing opposition from even his Republican base.

Iran responded to being attacked by exerting control over the Strait of Hormuz, the gateway for one-fifth of the world’s oil, making American consumers pay more at the pump months before congressional elections.

– Seeking to exhaust all options –

Despite suffering losses, Iran’s clerical state is not on the verge of collapsing and will not surrender, said Danny Citrinowicz, a former Israeli intelligence expert on Iran now at Tel Aviv University’s Institute for National Security Studies and the Washington-based Atlantic Council.

Trump “does not want escalation. I am not saying there is not going to be one, but he is trying to really exhaust any political option,” he said.

“I think Trump is fed up with this war and more than that he understands, despite what he is saying, that the price is only going to intensify. It’s not going to decrease,” Citrinowicz said.

But Iranian leaders are deeply suspicious of Trump, whose negotiators were discussing a deal with them days before the United States and Israel attacked — a pattern also seen last June, with the two sides talking just before an Israeli bombing campaign then.

Both Trump and Iran’s ruling clerics are sensitive to any suggestion of backing down.

In declaring the naval blockade during the ceasefire, Trump had forced Iran to respond, undermining his own diplomacy “for the sake of optics and looking strong,” Vatanka said.

In one potential off-ramp, Vatanka said that the United States could maintain the blockade but not enforce it rigorously.

“The Iranians would know if it’s not being enforced because that is easy to measure,” Vatanka said.

Iran could call it a win but if they insist on a full opening, “that tells me they’re more interested in the optics than actually getting a deal. It would be a mistake on their part,” Vatanka said.

– How big a blockade? –

Trump has not indicated any let-up on the blockade so far. Senator Lindsey Graham, a Republican who long advocated for striking Iran, indicated the blockade could now serve as the key US means of pressure.

Graham wrote on X that he had concluded after speaking with Trump on Wednesday that “the blockade will be growing and that it could become global soon.”

Sina Toossi, a senior fellow at the progressive Center for International Policy, said Trump had a choice on the blockade — lifting it, which would reinforce to Iran how much leverage it had gained, or keeping it and risking ending the ceasefire.

“The prevailing view in Tehran is that time is on its side and that a prolonged conflict would impose mounting costs on the US and the global economy,” he said.

• Phelan clashed with Hegseth, other military leaders.
• Hegseth has fired top officials from across the military.
• Firing of Navy secretary comes amid US naval blockade of Iran.
  

WASHINGTON: Navy Secretary John Phelan has been fired, a US official and a person familiar with the matter said on Wednesday, in another wartime shakeup at the Pentagon coming just weeks after Defence Secretary Pete Hegseth ousted the Army’s top general.

The Pentagon announced his departure in a brief statement, saying he was leaving the administration “effective immediately.” But it did not provide a reason or say whether it was his decision to go.

His firing was first reported by Reuters.

The sources, who spoke on condition of anonymity, said Phelan was dismissed in part because he was moving too slow to implement reforms to speed shipbuilding and because he had fallen out with key Pentagon leadership.

One source cited bad relationships with Hegseth, Hegseth’s deputy, Steve Feinberg, as well as the Navy’s number 2 civilian, Hung Cao, who the Pentagon said will now take over as acting Navy secretary.

The source also cited an ethics investigation into Phelan’s office.

A billionaire seen as having close ties to President Donald Trump, Phelan is the first administration-picked service secretary to be fired since Trump came back into office last year.

His departure fits within a broader context of upheaval at all levels of leadership at the Pentagon under Hegseth’s watch, including the firing last year of the chairman of the Joint Chiefs of Staff, Air Force General CQ Brown, as well as the chief of naval operations and Air Force vice chief of staff.

On April 2, Hegseth fired Army Chief of Staff Randy George without citing a reason. Two US officials said the decision was tied to tensions between Hegseth and Army Secretary Daniel Driscoll.

Senator Jack Reed, the top Democrat on the Senate Armed Services Committee, called Phelan’s dismissal “troubling.”

“I am concerned it is yet another example of the instability and dysfunction that have come to define the Department of Defence under President Trump and Secretary Hegseth,” Reed said.

The latest departure comes during a tense ceasefire with Iran, as the US flows more naval assets into the Middle East.

The US military is relying on naval assets to carry out a blockade of Iran, which President Donald Trump is hoping will pressure Tehran to negotiate an end to the conflict on his terms.

The Navy is under intense pressure to expand its fleet. China’s shipbuilding industry now dwarfs the US, which was once a global powerhouse.

Trump’s $1.5 trillion defence budget request for fiscal year 2027 includes over $65 billion to procure 18 warships and 16 support ships made by General Dynamics and Huntington Ingalls Industries.

It is part of what the Pentagon is calling the “Golden Fleet” initiative, which officials say is the largest shipbuilding request since 1962.