The Strait of Hormuz Is Not Blocked. It Is Broken.
April 13, 2026 — The U.S. has started the process of enforcing a naval blockade that is aimed at Iranian maritime trade, but the reality is that the deeper crisis has already been going on for a full six weeks now. Most people in the market seem to be trading based on what is likely the wrong variable.
The Blockade That Isn’t Quite a Blockade
Starting at 10:00 a.m. today, the people at U.S. Central Command put into action a naval embargo that targets any vessels that might be entering or departing from Iranian ports or their coastal waters. If you just look at the surface, ships that are moving through the Strait of Hormuz to get to ports that aren’t in Iran are officially allowed to go on their way. This does not really look like the kind of wide-ranging closure that President Trump was talking about on Truth Social earlier. When you look at the gap between that rhetoric and what the military is actually doing, it turns out to matter quite a bit. That is likely not for the reasons that most people in the market are assuming right now.
Even with those rules in place, Lloyd’s List Intelligence has already reported that commercial shipping traffic has basically come to a standstill anyway. It turns out that ship owners, insurance companies, and those chartering the vessels don’t really spend much time reading through legal fine print. Instead, they see warships moving around and hear that Iran’s Revolutionary Guard has put the strait under what they are calling "smart control." While this specific CENTCOM carveout might let Washington avoid being the one who technically owns a full closure of the waterway, it doesn’t do anything to actually make a tanker captain feel like they have to sail into the area. That state of operational uncertainty ends up creating an economic result that is almost exactly the same as if there were a formal ban in place.
The Leverage War Beneath the Headlines
Even the high-level talks between the U.S. and Iran in Islamabad, which went on for 21 hours and didn’t result in any kind of deal, seem to have fallen apart over what news reports are calling a set of very broad demands from the U.S. side. Those were mostly focused on putting limits on nuclear activity and making sure the Strait stays open permanently. Iranian officials have been saying that Washington was making demands that were either excessive or just not legal. They said that the U.S. kept changing what they were asking for. Both countries have acted like they are still open to talking later, but they didn’t actually settle any of the issues.
If you look at the thinking behind this blockade, the strategy seems to be to take away Iran’s ability to use the Strait as a leverage card. The idea is that if the shipping traffic that is linked to Iran is already being blocked, then any threats Tehran makes about closing the whole thing down don’t have as much power to scare people. There is some truth to that way of looking at it. The orders from CENTCOM seem to back up the idea that the goal here is to hit Iran’s income and their ability to bargain during negotiations. It also lets Washington do it without having to officially take the blame for closing the whole waterway.
Policies that are meant to force someone to do something aren’t really like moves in a chess game where everything is tidy and predictable. As soon as Washington says it is going to start stopping ships going to and from Iranian ports, and then Iran starts dropping hints that maybe no port in the whole area is truly safe anymore, the people in the shipping market start making their decisions based on fear. They aren't looking at what the legal fine print says they can do. The indirect effects of these actions end up being much harder to control than the people who designed this policy seem to think they will be.
The Real Risk Is Not an Explosion. It Is a Slow Squeeze.
We are already in a situation where oil being priced at over $100 a barrel is the new normal. If you look at LNG from places like Qatar and the UAE, the amount being moved has dropped by more than 300 million cubic metres every day since the first of March. That adds up to more than 2 billion cubic metres every week. That has effectively cut the world’s supply of LNG by about 20%. The EIA has put out estimates stating that there is only about 2.6 million barrels per day of pipeline capacity in Saudi Arabia and the UAE that could be used to get around the Strait. That isn’t anywhere near enough to make up for the amount of oil that has stopped moving. A huge portion of the world's extra oil production capacity is trapped behind that one specific chokepoint. When you look at the quality of this crisis, it is deeper and more difficult to deal with than almost any of the oil scares based on geopolitics that we have seen before.
The way this inflation is moving through the economy isn’t just a story about energy costs. We are seeing a spike in the cost of fertilizer. That is starting to put a real threat on the profit margins for farmers in the U.S. who are already feeling the pinch from the higher price of diesel fuel. The cost of moving grain around tends to go up right along with fuel prices. There is a very real chain of events where a disruption in the Strait leads to higher fertilizer prices, which then leads to less planting or smaller margins for farmers. This is especially true if it keeps going through the time when farmers in the Northern Hemisphere need to get their crops in the ground. At the same time, the confidence that consumers have is sitting at levels that are close to all-time lows. Households in the U.S. have a lot of debt that is tied to interest rates that can change. This isn’t the kind of price rise that goes along with a growing economy. It’s a situation where costs are pushing everything up and squeezing the system.
While releasing oil from the Strategic Petroleum Reserve might be able to fill in for some of the missing barrels on a temporary basis, it doesn’t actually fix the problems with marine insurance. It also doesn't solve the danger from sea mines, the congestion at the ports, or the fact that there is a lack of trust between what the Navy says and how people in the private sector actually behave. You can have a market that feels a bit less panicked, but that doesn’t necessarily mean that the underlying system has been fixed.
Where the Crowd Is Right and Wrong
If you look at the observations being made by some of the more serious and sophisticated people watching this, the point that seems the most important from a structural standpoint is that the market has been spending too much time focusing on the headlines from day to day. It hasn’t given enough weight to the simple fact that the actual physical system for moving things has been in a bad way for six weeks now. That is an insight that turns out to be right.
Where some of the sharper commentary starts to go too far is when it takes that one observation and tries to turn it into a total certainty. They say there will be a complete failure for the U.S., or that a global depression is guaranteed. While it is true that Russia’s position on the world stage might look a bit better in many of the scenarios where this disruption keeps going, a really serious global shock to energy also ends up weakening the demand for things. It creates a lot of mess in the systems used for shipping and making payments. China is facing a lot of real exposure because it imports so much through the Strait. Just because it might be more resilient than countries like Japan or South Korea doesn’t mean it is somehow immune to what is happening.
The idea that a "blockade means you should buy oil" is just too simple to be useful. The same goes for the idea that "talks starting back up means you should sell oil." The physical system underlying everything has already taken a lot of damage over the last few weeks. Even if we see a headline about a diplomatic breakthrough, that doesn’t suddenly bring back marine insurance or fix the channels that have had mines placed in them. The people at the IEA have said themselves that the real key to getting back to a stable state is to have regular transit start up again with the right insurance and physical protection in place. That isn’t something that can happen just because of a diplomatic statement.
The Scenario That Investors Should Model, But Aren’t
The most likely scenario right now isn’t something that feels dramatic enough to make everyone jump into an emergency policy response. It is certainly painful enough to keep a lot of structural pressure on costs. It’s a state that we could call prolonged partial dysfunction. In this situation, transit for ships that aren’t linked to Iran is officially supposed to stay open, but the actual traffic stays way below what is normal. At the same time, the extra costs for war-risk insurance stay high. The prices for oil, gas, and moving freight stay stuck at a high level. This ends up being the outcome that is most likely to lead to stagflation. That is exactly because it doesn’t have the kind of clear shock that would force someone to take really decisive action to stop it.
If we look at the worst-case scenario where maybe Iran starts to make threats that go beyond just their own ports, it would mean things could get really severe. You would see ships having to take the long way around the Cape of Good Hope. The price of oil could potentially climb up to somewhere between $150 and $200. In that kind of situation, countries that have to import a lot of what they need could even start to see a logic where they have to think about food rationing.
When you think about the practical side for investors, the ones who stand to gain the most in the short term seem to be the integrated and upstream energy giants. The defense sector and companies dealing in storage that don’t have a link to the Strait also look strong. It’s important to realize that tanker operators aren’t exactly winners here in a clean way. While their rates might be going through the roof, that is often canceled out by the fact that they can’t actually move their ships. The ones who are losing out in a more subtle way are the assets that are sensitive to how long things take. This is mostly in economies where the central banks have to deal with inflation that is being pushed by supply issues. It means they don’t have much room to make things easier.
Ultimately, the biggest mistake being made in the market right now is this tendency to think in simple, binary terms. While it is true that people are right to feel that this is more dangerous than what you hear in the mainstream news, they are making a mistake when they take that idea and try to turn it into a simple trade. The most accurate way to read this is something that is a bit more harsh and less dramatic. The physical system has already taken damage, and even though the blockade is more focused than the rhetoric suggested, it still has a huge impact on the economy. The main risk isn’t some kind of instant end to everything. Instead, it is a long, messy period where shipping is hampered and inflation stays sticky. The people in charge will feel frustrated. This is exactly the kind of situation where investors find themselves losing money because they were far too certain about what was going to happen.
not investment advice
Sources: NBC News (live updates on Trump announcing the blockade after talks fail): https://www.nbcnews.com/world/iran/live-blog/live-updates-us-iran-fail-reach-deal-peace-talks-day-negotiations-rcna315918 CNN (U.S. military to blockade ships from Iranian ports in the Strait of Hormuz): https://www.cnn.com/2026/04/13/world/live-news/iran-us-war-trump-hormuz The Guardian (Why the U.S. is threatening to block Iranian ports and the Strait of Hormuz): https://www.theguardian.com/world/2026/apr/13/strait-of-hormuz-blockade-what-why-explained-navy-trump-iran Al Jazeera (Iran war live: U.S. military to block Iranian traffic in Hormuz Strait): https://www.aljazeera.com/news/liveblog/2026/4/13/iran-war-live-us-military-to-block-iranian-port-traffic-in-hormuz-strait