The United States and Iran have reached an interim peace deal, marking the most significant diplomatic breakthrough between the two adversaries in decades. The agreement is scheduled to be signed on June 19, 2026, in Switzerland, with Pakistan and Qatar serving as the primary mediators who helped broker the framework.

Pakistani Prime Minister Shehbaz Sharif announced the deal on June 14, with US President Donald Trump confirming the news. After roughly four months of conflict and indirect negotiations stretching back to April 2025, the two sides have agreed to what amounts to a memorandum of understanding, a structured pathway toward a more permanent resolution.

What’s actually in the deal

The core of the agreement centers on three pillars: an immediate cessation of military operations, including on the Lebanon front; guaranteed freedom of navigation through the Strait of Hormuz; and a 60-day ceasefire extension designed to buy time for deeper negotiations toward a lasting settlement.

The Strait of Hormuz is the narrow waterway between Iran and Oman through which roughly a fifth of the world’s oil supply passes daily.

Pakistan and Qatar are listed as the primary mediating parties, but the broader diplomatic effort also involved Egypt, Saudi Arabia, and Turkey.

How we got here

The indirect negotiations that produced this framework began in April 2025, with talks held in various venues including Oman before moving into dedicated negotiations in Pakistan and other countries. “Indirect” is the key word. The US and Iran haven’t sat across a table from each other for formal bilateral talks in years, so intermediaries like Qatar and Pakistan effectively served as diplomatic couriers, shuttling proposals and counterproposals between the two sides.

Qatar’s role here is well-established. Doha has positioned itself as the go-to mediator for seemingly intractable conflicts, having hosted talks involving the Taliban, Hamas, and various other parties over the past decade. Pakistan’s prominent role is more notable. Islamabad shares a border with Iran and has historically tried to balance its relationship with Tehran against its alliance with Washington and close ties to Gulf Arab states.

What this means for markets and investors

The most immediate market impact will be felt in oil. The explicit inclusion of freedom-of-navigation guarantees in the deal text signals that both sides understand the global economic stakes of their confrontation.

The 2015 nuclear deal, known as the JCPOA, took years to negotiate and was ultimately abandoned by the US in 2018.

The wildcard is whether the ceasefire actually holds for 60 days. Investors should watch for any reported violations in the coming weeks, as even minor incidents could unravel the fragile framework before pen hits paper in Switzerland.