US and Iran Sign Historic Peace Memorandum, Ending Four-Month War and Reopening Strait of Hormuz

Trump and Iranian President Masoud Pezeshkian signed remotely the Islamabad Memorandum on June 17, 2026 to end the war between both countries and Israel. The agreement extends the current U.S.-Iran ceasefire for 60 days, with the goal in upcoming talks being a permanent end to the war, while the fate of Iran's nuclear program will be negotiated but remains unresolved for now. Markets greeted the news with a rally in stocks, with the S&P 500 up 1.9%, and oil prices dropping by almost 5%.

Global Economy

President Trump and Iran declared they've reached an initial agreement intended to end more than three months of war in Iran and reopen the Strait of Hormuz, with the deal scheduled to be formally signed in Switzerland marking a major breakthrough in the conflict that set the Middle East aflame and shook the global economy. Trump and Iranian President Masoud Pezeshkian signed remotely the Islamabad Memorandum on June 17, 2026 to end the war between both countries and Israel, with Trump signing it during dinner with French President Emmanuel Macron at the Palace of Versailles following the G7 summit, after which Pezeshkian signed it in Tehran. US and Iranian officials announced a preliminary agreement on a framework aimed at extending the ceasefire, reopening the Strait of Hormuz, and ending hostilities in Lebanon. The breakthrough represents a significant geopolitical shift after months of military conflict that had destabilized the Middle East region. If the agreement works as planned, several key developments are supposed to happen almost immediately, including the U.S.

Key Developments

and Iran ending the sporadic attacks that have been taking place despite a ceasefire, the Israel-Hezbollah fighting in Lebanon stopping, and Iran and the U.S. lifting their dueling blockades of the Strait of Hormuz that have prevented oil from leaving the Gulf, driving up prices across the world. The agreement extends the current U.S.-Iran ceasefire for 60 days, with the goal in upcoming talks being a permanent end to the war. The agreement, described as a memorandum of understanding (MOU), is an initial framework and not a final peace agreement that sets out a 60-day ceasefire period during which further talks are expected to address unresolved issues, including Iran's nuclear program, especially uranium enrichment levels and the status of its highly enriched uranium stockpiles. US and Iran reached a 14-point memorandum of understanding in mid-June 2026 to end more than 100 days of conflict, reopen the Strait of Hormuz without tolls, lift the US naval blockade, and begin a 60-day negotiation window on Iran's nuclear program, sanctions relief, and related issues.

The Bigger Picture

The agreement indicates that Tehran may be able to tap into a $300 billion development fund for Iran's reconstruction and economic development, provided it meets commitments laid out in a final deal. International reaction to the agreement has been mixed. Leaders in the Middle East and Europe praised the deal, with Qatari Prime Minister Sheikh Mohammed bin Abdulrahman bin Jassim Al Thani, who helped mediate the deal alongside Pakistan, praising the breakthrough and European leaders from the U.K., France, Germany and Italy also welcoming the deal, calling for swift implementation. However, the deal has faced significant criticism within the United States. Some Republican lawmakers lit into the Trump administration's memorandum of understanding with Iran, especially over the billions of dollars that could be paid to Iran as part of a permanent truce, with US Senate Minority Leader Chuck Schumer calling the agreement a fiasco and arguing Trump gave away the store.

Industry Response

The minority leader said Democrats are not going to vote for any potential deal that includes $300 billion for rebuilding in Iran, calling it surrender money that Trump gave them because he cut such a lousy deal. The memorandum of understanding between the U.S. and Iran did not resolve several critical issues that must still be worked out in another round of negotiations, as the fate of Iran's nuclear program will be negotiated but remains unresolved for now, with Trump making no mention of the nuclear issue in his initial posts though this is the main reason he cited for launching the war in February. Financial markets responded positively to the news. Markets greeted the news with a rally in stocks, with the S&P 500 up 1.9%, and oil prices dropping by almost 5%.

The Cost of Energy not just

Vice President JD Vance, in an interview on Fox News immediately after the deal was struck, said the agreement was a great thing for the American people, noting that Americans suffer from high gas prices and that the deal would drive down the cost of energy not just now but for the long term. The agreement comes after the Iran war had much of the world's oil supply stuck in the Persian Gulf as blockades by Iran and the U.S. kept the Strait of Hormuz effectively closed. The reopening of this critical shipping route is expected to have significant implications for global energy markets and international trade. Both sides have indicated their commitment to the peace process.

Looking Ahead

The US vice president said the 60-day period to reach a final deal is underway and each side is honoring its commitments so far. However, the durability of the agreement remains uncertain, with several unresolved issues yet to be negotiated in the coming two months.