U.S.-Iran Hostilities Pause: Inside the Fragile Truce, Tehran's Power Struggle, and the Three Unresolved Nuclear Issues That Could Sink It

Behind the scenes, reports indicate that concerns about diminishing ammunition on both sides are also limiting further escalation . The pause has had an immediate economic effect: global stock and bond markets rose, and oil prices fell .

But the Soufan Center describes the halt as a "mutually hurting stalemate" rather than a durable ceasefire, with both sides using the lull to seek strategic leverage and setting the stage for a "no war, no peace" equilibrium . The U.S. blockade of Iranian ports remains in place .

Tehran's deepening political rift

The pause has laid bare a fierce internal battle within Iran's leadership . On one side stand moderates and negotiators led by Parliament Speaker Mohammad Bagher Ghalibaf, Iran's lead negotiator. Ghalibaf has publicly argued that negotiation "is not tantamount to compromise" and that diplomacy is "part of the strategy of resistance" .

On the other side, a vocal hardline faction in Parliament and on the Supreme National Security Council has tried to derail any deal, accusing negotiators of "surrendering Iran to the US and Israel" . The recent escalation around the Strait of Hormuz and the funeral of the slain supreme leader bolstered the hardliners' position dramatically: hardline supporters physically confronted pro-ceasefire officials at funeral processions, attempted to assault President Masoud Pezeshkian, and chanted slogans like "We have a blood feud with America" .

The split is unusually public. State-linked media outlets have traded accusations, and the rift has reached "the deepest layers of Iran's hardline establishment," which had long presented a united front . The debate over negotiations has "evolved into a broader struggle for power inside Iran's ruling establishment, revealing fractures that extend from government institutions to the clerical hierarchy" .

The three unresolved issues from the Islamabad Memorandum

The Islamabad Memorandum of Understanding was signed on June 17, 2026, by President Trump and Iranian President Masoud Pezeshkian, with Pakistani PM Shehbaz Sharif as witness . It was a 14-point interim agreement that instituted an immediate ceasefire, mandated reopening of the Strait of Hormuz, waived U.S. sanctions on Iranian oil exports for 60 days, and committed both sides to a 60-day negotiating window for a final agreement .

Less than a month later, strikes had resumed and both sides accused each other of violating the MoU . Trump said he viewed the truce as over; Iran said it no longer intended to adhere to it . With the 60-day deadline approaching around August 16, 2026, three core issues remain unresolved :

1. The fate of Iran's enriched uranium stockpile. The MoU deferred nuclear negotiations to the 60-day window, but the IAEA has lost continuity of knowledge across all of Iran's declared nuclear facilities following U.S. and Israeli strikes that began February 28, 2026. A senior U.N. official told the Security Council this loss "could not be restored" . In early June, Iran stonewalled IAEA demands to verify the condition and location of its enriched uranium stockpile, though it allowed a limited inspection at Bushehr . On June 10, the IAEA Board passed a resolution demanding Iran disclose and allow verification of its remaining uranium stocks — Iran has not yet complied .

2. The return of IAEA inspectors. This is directly tied to the uranium issue. Iran has not restored full IAEA access. The agency's board resolution specifically calls on Iran to report its stocks and "allow for inspections to verify these amounts" . As of late July, that has not happened. Eight days after the MoU was signed, Iran's deputy foreign minister said inspectors would not be allowed anywhere near enrichment sites until full sanctions relief is delivered .

3. The scope of sanctions relief. The MoU waived oil sanctions for 60 days, allowing Iran to resume crude sales, but this was temporary and conditional . On June 21, the U.S. issued a 60-day sanctions waiver . However, the U.S. subsequently cancelled that temporary exemption during the July escalations, which Iran cited as a breach of the agreement . The permanent scope of sanctions relief — including banking, shipping, and non-oil sectors — was left for the 60-day negotiations and remains unsettled .

The approaching deadline and expert warnings

The 60-day window began with the June 17 signing, placing the deadline around August 16, 2026 . Technical talks in Doha and Bürgenstock, Switzerland, made some "positive progress" in early July but then stalled . The Institut Montaigne assesses that the MoU has effectively failed, with strikes resumed, maritime traffic paralyzed again, and trust shattered . The Soufan Center warns that without a diplomatic breakthrough, either side could resume strikes at any moment . Analysts at ABC News and Al Jazeera note that the ceasefire had "teetered on the edge of total collapse" even before the last round of strikes .

Expert consensus is clear: without a final agreement on the nuclear file — including stockpile verification, inspector access, and a durable sanctions framework — the current pause is fragile and likely temporary .