The US naval blockade of Iranian ports went live yesterday. Ships entering or leaving Iranian ports are prohibited by the US, and that seems to be holding up 24 hours in. Britain and France have refused to join the effort.

1. Pressure Works -- This Will Break Iran (Hawks, Bolton, Commentary)

The ceasefire proved Iran can be pressured. The blockade will finish the job.

It's our best non-violent option. Retired General Jack Keane called a blockade "the ultimate leverage" to pressure Tehran into nuclear concessions. He pointed to what he described as a successful US blockade against Venezuela that helped cripple its economy. The logic is straightforward: Iran's economy runs on oil exports, and cutting them off forces capitulation faster than any bombing campaign.

John Bolton -- no Trump ally these days -- gave the blockade a thumbs up. His argument on Bloomberg was blunt: you don't need to bomb Kharg Island, just make sure no Gulf oil gets out until Tehran breaks. If Iranian oil can't move, the regime's leverage evaporates. Commentary contributor Ilan Berman made the structural case in the Washington Times: Iran's regime has too much leverage over the health of the global economy, and reducing it should be a top priority. Six weeks of strait disruptions have already roiled markets and proven the point.

The US has the hardware to do this. Central Command has deployed underwater drones, littoral combat ships with mine-countermeasures packages, and helicopters to clear Iranian mines from the strait. Iran has had a de facto blockade running since February 28, charging over $1 million per ship for safe passage and laying naval mines. The US blockade replaces Iran's extortion racket with American enforcement. The strait was already closed -- now it's closed on our terms.

2. This Is Unsustainable (Military Experts, Critics)

The mission is too big, too expensive, and too lonely to last.

It's a massive task. Dana Stroul, former senior Pentagon official, said: "This mission is difficult to execute alone and likely unsustainable over the medium to long-term." Admiral James Stavridis estimated the Pentagon needs two carrier strike groups, about a dozen surface ships outside the gulf, at least six destroyers inside, plus partner navy support from UAE and Saudi Arabia. That's an enormous force commitment with no end date.

The enforcement problem is real. Andreas Krieg at King's College London called the blockade "complicated, high-risk and legally contentious." Boarding operations -- stopping ships, ordering them to heave to, sending teams by helicopter -- are what military analysts call "pretty dicey." It's unclear whether the US would actually board ships carrying oil for China, India, or South Korea. Senator Mark Warner asked the obvious question: How will blocking the strait open it?

3. Everyone Is Getting Hurt (Global Analysts, Allies)

700 ships trapped, oil around $100, Iraq losing billions a month – the pressure is on Washington too.

The collateral damage is already staggering. According to CNBC analysis, Iraq's oil exports have collapsed from roughly 100 million barrels in a normal month to under 19 million, with revenue dropping from nearly $7 billion to under $2 billion. About 10 million barrels per day are now blocked. Fertilizer, chemical, and plastic costs are rising worldwide. China imports nearly a third of its oil through the strait.

Iran still has teeth. Retired Admiral Gary Roughead, former chief of US naval operations, warned that he believes Iran will retaliate if the blockade continues. Iran retains naval mines, speedboats carrying missiles, surface and aerial drones, land-based cruise missiles, and shoulder-fired anti-aircraft missiles. They've already launched 21 confirmed attacks on merchant ships since February. The IRGC's response to the blockade was blunt: "Ports are either for everyone or for no one."

Where This Lands

Kennedy's quarantine of Cuba lasted less than a month, required no boarding operations, and ended when both sides found a diplomatic exit. This blockade has no diplomatic framework, no allied participation, and an adversary that's already fired on 21 ships. But the Hawks may be entirely right that economic pressure is the fastest path to Iranian concessions. The real question is: Who will break first?

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