US and Iran Sign Initial Peace Deal to Reopen Strait of Hormuz and End 100-Day War

After more than one hundred days of devastating conflict that severely disrupted global energy markets and supply chains, the United States and Iran have reached a breakthrough agreement to end hostilities. On Sunday, President Donald Trump, Vice President JD Vance, and Iranian Parliament Speaker Mohammad Bagher Ghalibaf electronically signed a memorandum of understanding that establishes a 60-day ceasefire extension. The landmark deal, brokered heavily by Pakistani Prime Minister Shehbaz Sharif alongside diplomats from Qatar and Saudi Arabia, aims to permanently terminate military operations on all fronts and immediately lift the crippling U.S. naval blockade on Iranian ports. The electronic signing marks the first tangible step toward de-escalation since the war erupted in late February.[3][8]

The most immediate global impact of the agreement is the reopening of the Strait of Hormuz, a critical maritime chokepoint through which a fifth of the world's oil and natural gas historically passed before the conflict brought traffic to a standstill. Following the electronic signing, President Trump took to social media to declare the deal complete, authorizing the toll-free opening of the waterway with the proclamation, "Ships of the World, start your engines. Let the oil flow!" The announcement sent immediate ripples of relief through global energy markets, with U.S. crude oil prices dropping roughly 4.2 percent to $81.30 per barrel in early trading, signaling investor optimism that the worst of the energy crisis may be subsiding.[3][6]

While the memorandum of understanding has been digitally executed, the formal implementation and public release of the text are slated for a high-stakes signing ceremony in Switzerland on Friday, June 19. Vice President Vance is expected to lead the U.S. delegation for the in-person event, which will be preceded by intensive preparatory meetings in Doha facilitated by Qatari mediators. Iranian Deputy Foreign Minister Kazem Gharibabadi confirmed the timeline on state television, though he emphasized that Tehran would not begin implementing the terms—including the full resumption of maritime traffic—until the physical documents are signed. This cautious approach reflects the deep-seated distrust between the two nations, with Iranian state media noting the agreement "does not signify trust in the enemy."[3][4]

A major point of contention during the final hours of mediation was the operational control of the Strait of Hormuz during the 60-day transition period. While President Trump authorized the immediate removal of the U.S. naval blockade, Iranian officials had previously floated the idea of charging tolls to commercial shipping vessels traversing the waterway as a form of economic leverage. Senior U.S. administration officials have firmly pushed back on this narrative, briefing reporters that the memorandum explicitly guarantees the strait will remain open and toll-free for the duration of the ceasefire. Washington expects this unfettered access to become a permanent fixture in the final treaty, though maritime experts warn it will take weeks to clear mines and restore normal shipping volumes.[7][8]

The 60-day ceasefire window is explicitly designed to provide breathing room for negotiators to tackle the most intractable issue between the two nations: Iran's nuclear program. U.S. officials have indicated that the upcoming technical talks will focus heavily on dismantling nuclear material that could be used to create a weapon, a core, non-negotiable demand of the Trump administration. Vice President Vance noted in television interviews that while the U.S. military remains prepared to ensure compliance if necessary, the administration hopes the technical discussions will yield a verifiable, peaceful mechanism for destroying enriched stockpiles. However, Iran has historically maintained that its nuclear program is strictly for civilian purposes, setting the stage for highly fraught negotiations over the next two months.[4][6]

Financial concessions also remain a highly sensitive and contested component of the preliminary agreement. Iran's powerful Revolutionary Guard has publicly claimed that the country will receive access to half of its roughly $24 billion in long-frozen overseas funds before the final negotiations conclude, framing the cash infusion as a victory for their resistance. In stark contrast, senior U.S. administration officials have briefed reporters that any sanctions relief or release of frozen assets will be strictly tied to Iran's verifiable performance and compliance with the deal's terms, rather than being granted upfront as a gesture of goodwill. This glaring discrepancy highlights the domestic political tightropes both governments are walking as they attempt to sell the ceasefire to their respective hardline constituencies.[3][8]

The most significant and immediate threat to the fragile peace deal comes from Israel, which joined the U.S. in launching the initial strikes against Iran in late February but is notably not a party to the new bilateral agreement. Israeli Prime Minister Benjamin Netanyahu has explicitly stated that his country is not bound by the U.S.-Iran memorandum, particularly regarding its ongoing military operations against Hezbollah in Lebanon. In a televised address following the deal's announcement, Netanyahu claimed the joint military campaign had successfully pushed back the threat of "nuclear annihilation" for years, but his government insists it will not withdraw troops from Lebanese territory or halt its campaign to dismantle Iranian proxy networks.[3][6]

Israel's refusal to halt its northern offensive severely complicates the broader regional de-escalation envisioned by the U.S. and Pakistani mediators. During the final 14 hours of intense negotiations on Sunday, Iranian officials reportedly threatened to walk away from the table entirely after Israeli forces struck targets in Beirut. According to Vice President Vance, the U.S. intelligence community saw concrete evidence that Iran was preparing to launch a large-scale missile barrage at Israel in retaliation for the strikes. The crisis was only averted after last-minute American diplomatic interventions and concessions regarding the speed of lifting the naval blockade, which ultimately convinced Tehran to stand down and sign the memorandum.[4]

Despite the diplomatic triumph of pausing the direct U.S.-Iran war, geopolitical analysts warn that the underlying structural conflicts remain dangerously unresolved. Experts at the Atlantic Council caution that there is likely a significant "delta" between the lofty aspirations outlined in the 14-point memorandum and what can realistically be achieved in a final, comprehensive treaty. While the reopening of the Strait of Hormuz provides vital and immediate economic relief to global markets, Iran has definitively proven its capacity to shut down global maritime commerce. Analysts note that this ability to choke off the world's energy supply remains a potent leverage point that Tehran will undoubtedly wield during the upcoming 60 days of technical nuclear talks.[1][5]

European allies and the broader international community have cautiously welcomed the diplomatic breakthrough, viewing it as a desperately needed step to avert a wider regional conflagration and stabilize rampant global inflation. G7 leaders are currently scrambling to coordinate their response and determine how they can support the technical implementation of the ceasefire, particularly regarding maritime security in the Persian Gulf. As the world watches the lead-up to Friday's signing ceremony in Geneva, the ultimate success of the deal hinges on whether Washington and Tehran can transform a temporary battlefield pause into a durable settlement, all while navigating the highly volatile wildcard of Israel's ongoing multi-front war.[2][8]