Let the Oil Flow
The US and Iran signed a memorandum of understanding Sunday. The Strait of Hormuz opens Friday. Here is what the deal is, what it is not, and why the distinction matters.
On Sunday evening, Donald Trump posted four words on Truth Social that moved oil markets by 4.5 percent in thirty minutes: "Let the oil flow."
The fuller post declared the deal with Iran complete, authorized the reopening of the Strait of Hormuz, and called for the immediate removal of the US naval blockade. Iran's Supreme National Security Council confirmed the agreement shortly after. A formal signing ceremony is scheduled for Geneva on June 19.
The Strait has been effectively closed since February 28, when Iranian Revolutionary Guard Corps forces issued warnings forbidding passage, boarded and attacked merchant ships, and laid sea mines. That closure removed roughly 20 percent of global petroleum exports from the market and became the central driver of the inventory drawdowns and elevated gasoline prices that have defined oil markets for the past three and a half months.
The price of US crude oil fell more than 4.5 percent to $80 per barrel, its lowest level since the first week of March, as trading opened Sunday evening. Brent crude also tumbled by about 4 percent, touching $83.
What the Deal Actually Is
The agreement announced on June 14 is a memorandum of understanding, set to be signed on June 19, intended to bring the conflict to a formal end within 60 days. It is not a peace treaty. It is not a nuclear agreement. It is a commitment to stop shooting, lift blockades, and begin the process of clearing the Strait of the mines Iran laid during the conflict.
Trump said the Strait will be opened for mine removal after the deal is signed on Friday. Iran made an end to fighting between Israel and Hezbollah in Lebanon a condition for the deal. However, Israeli Defense Minister Israel Katz said Monday that Israel would keep troops in southern Lebanon indefinitely.
That last detail is not a footnote. It is a live variable. The Lebanese front was a precondition Iran insisted on. Israel's refusal to honor it creates exactly the kind of ambiguity that has caused every prior ceasefire in this conflict to wobble.
What the Market Gets
The assumption that oil markets will quickly revert to pre-conflict conditions deserves scrutiny. Oil storage facilities throughout the Gulf remain well-stocked, ready to offer immediate relief to markets, while thousands of engineers and technicians are already working to restore production and export infrastructure to prewar levels. The challenge is that energy markets run on certainty.
Amos Hochstein, a senior US energy diplomat, put the underlying reality plainly: "No matter what happens, the Iranians will control the Strait of Hormuz for the foreseeable future. It doesn't even matter what the deal says. Everybody in the region believes that."
That is the sentence oil traders are sitting with this week. The deal is real. The Strait will open. But the structural reality of who controls that waterway has not changed and will not change on June 19.
What Was Built While It Was Closed
The 107-day closure produced something that will outlast the ceasefire. While the Strait was closed, the EU and India struck what European Commission President Ursula von der Leyen called "the mother of all deals," creating a free trade zone of 2 billion people. Long-delayed European plans for increasing trade with South American nations also took a step forward, as did a limited trade deal between Canada and China to cut tariffs on electric vehicles and canola oil.
The world reorganized itself around an absent America. Those arrangements do not dissolve because the Gulf is open again.
The 60-Day Clock
The MOU gives both sides 60 days to work toward a permanent settlement. The nuclear question was not resolved. Iranian enrichment continues. The underground facilities remain. Iran's Supreme National Security Council said the deal was reached "following a difficult and intensive period of negotiations lasting several months." What those negotiations produced is a pause, not a resolution.
Sixty days puts the next decision point in mid-August. By then, the Strait will either be fully operational or it won't. The permanent deal will either be taking shape or it won't. The Lebanese front will either be quiet or it won't.
"Ships of the world, start your engines," Trump wrote Sunday. They are starting. Whether they keep running is the question August will answer.
Works Cited
Atlantic Council. "Experts React: The US and Iran Just Announced an Interim Peace Deal." June 14, 2026. atlanticcouncil.org
Britannica. "2026 Iran War." June 2026. britannica.com
NBC News. "US and Iran Reach Framework Deal to End War and Reopen the Strait of Hormuz." June 14, 2026. nbcnews.com
NPR. "US and Iran Announce an Initial Deal to End the War and Reopen the Strait of Hormuz." June 15, 2026. npr.org
TheStreet. "White House Makes Promise on Strait of Hormuz, Oil." June 14, 2026. thestreet.com
Yahoo Finance. "All the Biggest Trade Deals So Far in 2026 Don't Involve the US." January 2026. yahoo.com
Reuters | Shipowners, insurers and vessel crews will need to be convinced that it is safe to pass through the Strait of Hormuz before full-scale maritime transit can resume.