U.S. and Iran Sign Historic Memorandum to End 110-Day War and Reopen Strait of Hormuz

The United States and Iran have officially signed a landmark 14-point Memorandum of Understanding to end a devastating 110-day war, establishing an immediate 60-day ceasefire and paving the way for the reopening of the Strait of Hormuz. The preliminary agreement, brokered heavily by Pakistani Prime Minister Shehbaz Sharif, halts a high-intensity conflict that began in late February and sent unprecedented shockwaves through the global energy market. By mutually lifting crippling maritime embargoes, the framework offers the first concrete step toward de-escalation in a war that has reshaped Middle Eastern geopolitics and threatened to trigger a worldwide economic depression.[2][3][4][7]

U.S. President Donald Trump signed the document during a dinner with French President Emmanuel Macron at the Group of Seven summit in Évian-les-Bains, France, shortly after Iranian President Masoud Pezeshkian authorized the deal in Tehran. The physical signatures followed a remote digital approval process earlier in the week involving U.S. Vice President JD Vance and Iranian Parliament Speaker Mohammad-Bagher Ghalibaf. G7 leaders immediately praised the breakthrough, releasing a joint statement that commended the diplomatic effort as a historic opportunity to prevent nuclear proliferation and restore stability to international trade routes.[1][2]

The immediate centerpiece of the framework is the mutual lifting of maritime blockades that have choked global commerce. Iran has agreed to instantly reopen the Strait of Hormuz—a critical maritime chokepoint that typically handles 20 percent of the world's traded petroleum and a quarter of global liquefied natural gas. In exchange, the United States will immediately terminate its comprehensive naval blockade of Iranian ports. Global markets surged on the news of the impending energy relief, with Japan's benchmark Nikkei index crossing the historic 71,000 mark for the first time and international crude oil prices tumbling.[2][4][6][7]

Beyond the critical waterways, the memorandum mandates a permanent termination of military operations on all fronts, explicitly including the volatile border in Lebanon. This provision effectively requires Tehran to rein in Hezbollah forces, a major concession aimed at preventing the conflict from spilling further into the Levant. However, U.S. officials noted that Israel, which is not a formal party to the bilateral agreement, retains the inherent right to respond to any localized attacks, leaving the northern Israeli border in a state of tense uncertainty.[2][3]

The most heavily debated economic component of the peace deal is a proposed $300 billion reconstruction and investment fund for Iran. U.S. officials and allied diplomats describe the massive package as a private investment vehicle funded by Gulf Arab states, Asian partners, and international corporations. The fund is designed to provide Tehran with a compelling economic incentive to finalize a permanent treaty, focusing on infrastructure and energy development rather than direct cash transfers from Western governments. Vice President Vance emphasized that access to these funds is strictly contingent on Iran honoring its end of the obligations.[5][8]

However, the framing of this multibillion-dollar fund has sparked fierce domestic political debates in both countries. While the Trump administration insists no U.S. taxpayer money is involved and has dismissed claims of direct payouts as political misinformation, Iranian state media has aggressively presented the package as guaranteed war reparations. The agreement also facilitates the eventual release of frozen Iranian assets held abroad, though U.S. negotiators emphasized that these funds will only become accessible upon the verified implementation of the deal's broader terms, ensuring Washington maintains economic leverage.[2][5][8]

The framework explicitly ties this broad sanctions relief to a final, verifiable settlement regarding Iran's nuclear program. During the 60-day negotiation window, the two nations will discuss technical mechanisms for Iran to down-blend its 440-kilogram stockpile of highly enriched uranium, rendering it unusable for weaponization. Tehran reaffirmed in the text of the memorandum that it will not procure or develop nuclear weapons under any circumstances, a stipulation that G7 leaders highlighted as the primary strategic victory of the negotiations.[1][2]

Despite the diplomatic breakthrough, maritime security experts warn that the Strait of Hormuz will not return to normal commercial operations overnight. The waterway remains heavily mined from the intense naval conflict, requiring a slow, highly specialized, and costly demining operation before international shipping conglomerates and maritime insurance companies will authorize full-scale transit. Furthermore, Iran has signaled intentions to establish a Persian Gulf Strait Authority to charge fees for maritime services in the strait, a move that could directly complicate the U.S. assertion of a permanently toll-free passage.[2][6]

The war, which erupted on February 28 following U.S. and Israeli strikes that resulted in the death of Iranian Supreme Leader Ali Khamenei, fundamentally altered the Middle Eastern security landscape. The ensuing months saw Iran close the strait and launch unprecedented counter-strikes against regional U.S. military installations, prompting a severe U.S. counter-blockade that paralyzed the Iranian economy. The conflict forced European nations to scramble for alternative energy routes and pushed the global supply chain to its breaking point.[3][4][6]

While European allies expressed profound relief over the stabilization of energy routes, the agreement has faced intense skepticism from the Israeli security establishment. Former advisers to Israeli Prime Minister Benjamin Netanyahu warned that lifting the economic pressure on Tehran provides the regime with a vital financial lifeline without guaranteeing the permanent dismantlement of its nuclear infrastructure. Skeptics argue that the 60-day window allows Iran to regroup and potentially leverage the $300 billion fund to rebuild its proxy networks across the region.[2][8]

Ultimately, the current memorandum serves only as a fragile bridge to a comprehensive treaty. Both Washington and Tehran have exactly 60 days to forge a final agreement, which would require formal endorsement via a binding United Nations Security Council resolution to ensure international compliance. U.S. officials have made it explicitly clear that either side can walk away at any time, with President Trump warning that the U.S. military is fully prepared to resume bombing operations if the negotiations collapse or if Iran violates the ceasefire.[1][2][7]