The U.S. Revoked Iran's Oil Waiver After Tanker Attacks. A One-Month-Old Truce Is Already Fraying.

The United States revoked the license that let Iran sell its oil on July 7, pulling back a central piece of the deal that ended the U.S.-Iran war just last month. A U.S. official said Iran’s recent actions in the Strait of Hormuz were “wholly unacceptable” and would be “met with consequences.” Iran was given until July 17 to wind down existing sales.

The move landed after three tankers were struck by unknown projectiles in and near the strait in recent days. Oil prices rose more than 3% on the news.

What the Waiver Was

The license was not a favor. It was part of the bargain. Under the 14-point memorandum signed last month to end the fighting, the Treasury issued a June 22 general license allowing Iran to sell crude and petroleum products through August 21 while talks continued.

A U.S. official described the arrangement as “entirely performance-based,” meaning Iran keeps the economic relief only as long as Washington judges its behavior acceptable. Revoking the waiver pulls the main thing Iran got out of the deal.

An Unsettled Blame

Who struck the tankers is not established. They were hit by unknown projectiles, and the U.S. is treating Iran’s conduct in the strait as the cause without having laid out public proof. Iran’s foreign ministry condemned the revocation, called it a breach of the memorandum that ended the war, and said it would take any measure it deems necessary to protect its interests.

That is the danger. A month-old truce is now a standoff, each side accusing the other of breaking it, with the Strait of Hormuz, the chokepoint for a fifth of the world’s oil, in the middle.

Why It Matters at Home

A slide back toward war would not stay overseas. The last round of fighting pushed gas prices up and deepened the cost-of-living squeeze, and oil markets moved again the moment this waiver was pulled. The strait is where a diplomatic dispute becomes a price shock at the pump.

It is also where the Constitution is supposed to bind. The strikes that started the last war were carried out without a congressional vote. If the truce collapses, the question of whether the president can take the country back to war on his own is not settled, and Congress is the body meant to settle it.

What You Can Do Now

Use the letter below to tell your senators and representative to demand a vote before any renewed military action against Iran, and to require the administration to brief Congress and the public on what actually happened in the Strait of Hormuz.
Call your members of Congress at (202) 224-3121. Ask them to press for the evidence behind the “wholly unacceptable” claim before the country is talked back into a war, and to invoke the War Powers Resolution if strikes resume.
Track the July 17 deadline. If Iran’s oil sales are cut off and the strait stays tense, that is the window where a fragile truce either holds or breaks. Public pressure for diplomacy over escalation matters most before the shooting starts, not after.

Update, July 18, 2026: Iran’s supreme leader Mojtaba Khamenei warned Saturday that the United States will face “unforgettable lessons” from Tehran and its regional allies. In a statement read on Iranian state television, Khamenei declared Trump’s signature on last month’s memorandum of understanding “utterly worthless and invalid.” Both governments have since declared the Qatar- and Pakistan-mediated accord finished, each accusing the other of violations, according to Al Jazeera.

The US escalated strikes this week to target civilian infrastructure inside Iran, hitting water desalination plants and railway lines. Iran responded by striking civilian infrastructure in Kuwait, where authorities issued electricity rationing orders to the public.

Reports emerged Friday that Houthi forces in Yemen may close the Bab al-Mandeb strait to Red Sea shipping in a show of support for Iran. A closure would tighten global energy supply and apply additional economic pressure on the Trump administration, which faces broad domestic opposition to the conflict.