US–Iran negotiations in Islamabad have run into a major roadblock, with both sides failing to bridge differences over the strategic Strait of Hormuz, according to multiple reports.
The talks, mediated by Pakistan, continued late into Saturday with no sign of an immediate agreement. Diplomatic sources indicated that discussions may extend further as negotiators attempt to resolve key sticking points.
Iranian state-linked outlet Tasnim reported that the dialogue has been ongoing for several hours, with technical teams from both sides now exchanging written proposals after an initial round of face-to-face engagement.
A Pakistani source quoted by Reuters described the early phase of talks as uneven and tense, noting fluctuations in the tone of discussions as negotiators pressed their respective positions.
At the center of the impasse is the Strait of Hormuz, one of the world’s most critical energy corridors, responsible for a significant share of global oil shipments. Iran is pushing to retain its strategic leverage over the waterway, while the United States is seeking firm assurances for uninterrupted international shipping.
Another unresolved issue is Iran’s insistence that any broader settlement also address regional conflicts involving Lebanon. Washington, according to sources familiar with the talks, has rejected expanding the agenda to include that demand.
The high-level negotiations are taking place in Islamabad with Pakistani leadership involved in facilitation efforts. The U.S. delegation is led by Vice President J.D. Vance, while Iran’s team is headed by Parliament Speaker Mohammad Bagher Ghalibaf.
Iran has reportedly outlined several core demands, including compensation for wartime damage, the release of frozen assets, and limits on external military pressure affecting its regional allies. The United States has countered with its own framework focusing on nuclear restrictions and maritime stability in the Strait of Hormuz.
Despite hours of engagement, the talks remain deadlocked, with no indication yet of a compromise. Diplomatic observers say the dispute over Hormuz could determine whether the broader ceasefire framework holds or begins to fracture.
