The US and Iran Made a Deal — But Trust Is Already Falling Apart

President Trump threatened on June 21, 2026 that the United States could bomb Iran and take control of the Strait of Hormuz if negotiations fail. This was his harshest warning since both countries signed an initial agreement just four days earlier. At the same time, Iran's government publicly complained it doesn't trust Trump, especially over what's happening in Lebanon. Trump's chief negotiator was flying to Switzerland to begin formal talks.

What Was Actually Agreed To

On June 17, 2026, both sides signed a 14-point memorandum of understanding — essentially a preliminary agreement that sets the direction for talks. Think of it like shaking hands and agreeing to negotiate seriously, rather than a final contract.

The agreement commits Iran to reduce its stockpile of highly enriched uranium — the material used in nuclear weapons. It also includes promises about keeping sea lanes open through the Strait of Hormuz, a vital shipping route, and addresses what's happening in Lebanon. Both leaders, Trump and Iran's President Masoud Pezeshkian, signed it in English and Farsi.

World leaders welcomed it. Leaders from the G7 countries met on June 17 and formally endorsed the deal, and they called for a ceasefire in Lebanon. But signing a preliminary agreement is the easy part. Turning it into a real, binding treaty is where things get difficult — and where trust matters most.

The Lebanon Problem

Lebanon is becoming the main sticking point. Israel and Hezbollah (a political and military group backed by Iran) restarted their ceasefire on June 19, 2026, pulling back from a new round of fighting that could have destroyed the whole US-Iran agreement. But this ceasefire is shaky and fragile.

On the same day, Israel's defense minister said Israeli troops would stay in Lebanon. Hezbollah said it would only stop fighting if Israel agreed to fully leave. Iran's government told negotiators it will only stick with the nuclear deal if Israel withdraws from Lebanon.

These three positions don't line up. There's no middle ground they all accept.

Iran's government put out angry statements on June 19 blaming Israel for attacks in Beirut, a Lebanese city, and suggesting the United States was helping Israel do it. Two weeks earlier, on June 8, Iran had been even clearer: any more Israeli moves against Lebanon or Iran would have consequences. Iran's public tone doesn't sound like a government that feels confident about these negotiations.

A Bumpy Start to Talks

The formal negotiating session was supposed to start in Switzerland on Friday, June 20, but Iran delayed it. The delay came after Trump moved the talks away from Oman — a country that had been helping as a neutral go-between. Trump also publicly criticized Oman's role. Using a mediator as a pressure tactic is unusual and likely caught the attention of other countries in the region that the US will need to cooperate with long-term.

Pressure From All Sides

Meanwhile, the US hasn't paused its campaign against Iran. On June 2, the United States banned Iranian digital asset exchanges (online platforms for trading cryptocurrency and similar assets) because of terrorism concerns. On June 5, it added more sanctions targeting energy smuggling and illegal money networks. On June 10, the State Department and allied countries issued a joint statement condemning Iranian plots to kill people in Europe, North America, and Australia.

All of this kept happening even after the agreement was signed. It's unclear whether this reflects a deliberate strategy to pressure Iran while negotiating, or whether different agencies in Washington aren't fully coordinated with each other. Trump's negotiator in Switzerland may clarify this.

The US is also managing a separate, three-way conversation with Israel and Lebanon about their border and who controls what territory. The State Department has been careful to keep this separate from the Iran nuclear negotiations — treating it as a Lebanese-Israeli issue, not something tied to the agreement with Iran. But Iran insists these are connected. This difference in how each side sees the problem is the central divide in these negotiations.

The Real Question

The situation can be summed up simply. Iran wants proof that Israel will leave Lebanon before it commits to reducing uranium for years to come. Israel refuses to agree to a withdrawal timeline set by Iran. The United States is using both carrots and sticks: offering the agreement and a dedicated negotiator as incentives, but also threatening airstrikes and continuing sanctions as pressure.

The danger here is real. If Iran reads Washington's threats and sanctions as more important than its diplomatic offer, Iran will become even more suspicious and dig in harder. That's the opposite of what you need to make a deal stick.

The negotiations starting in Switzerland are the first genuine test. Either the signatures from June 17 mark the beginning of serious bargaining, or they're just political theater that each side can claim means what it wants. The next weeks will tell which one it is.