The Islamabad track is unravelling: A new phase in the U.S.-Iran conflict

The Islamabad track is unravelling: A new phase in the U.S.-Iran conflict
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The fragile diplomatic pause between the U.S. and Iran is rapidly eroding as renewed military exchanges and attacks on shipping expose the limits of June's agreement and raise fresh doubts over the prospects for lasting negotiations.

From an unstable truce to sustained exchanges

The latest exchanges between the U.S. and Iran suggest that the diplomatic pause established in June is rapidly losing momentum. The memorandum associated with the Islamabad track was intended to create a 60-day period of reduced hostilities, limited sanctions relief and negotiations over safe navigation through the Strait of Hormuz. Instead, tanker attacks, renewed U.S. strikes and further clashes in the Gulf have exposed how little trust existed beneath the arrangement.

It would be premature to declare the framework formally dead. Washington and Tehran still retain channels through Pakistan, Oman and Qatar, and neither side appears eager to accept the costs of an open-ended war. However, the memorandum now looks less like a durable ceasefire than a temporary mechanism that both sides are testing, stretching and repeatedly violating.

Since early July, the confrontation has shifted from an unstable pause to a more sustained exchange of strikes around the Gulf and the Strait of Hormuz. U.S. operations have largely focused on military facilities, Islamic Revolutionary Guard Corps infrastructure, surveillance systems and anti-ship capabilities along Iran's coast and at key ports, including Bushehr and Chabahar.

Iran, in turn, has targeted U.S. facilities in Gulf states and has continued to use shipping through Hormuz as a source of pressure. Reporting from the region indicates that the military exchanges remain geographically limited and that Iran's wider network of partners has not been fully activated. That distinction matters. The situation is serious, but it does not yet amount to a full-scale regional war.

A more accurate description is a limited confrontation in which military force and diplomacy are operating simultaneously. Each side is attempting to increase the cost to the other without closing off every route back to negotiations.

Washington is using force to shape the talks

The pattern of U.S. strikes suggests an attempt to compel Tehran to accept stricter rules for navigation and security in the Strait of Hormuz. Washington has so far concentrated on military and dual-use targets linked to threats against shipping and regional partners, rather than pursuing the systematic destruction of Iran's civilian economy.

That restraint should not be assumed to be permanent. If diplomacy continues to fail, the U.S. may widen its pressure campaign. Transport hubs, logistics networks and other infrastructure supporting Iranian military operations could become more vulnerable. However, this remains a possible scenario rather than established policy, and that distinction should be kept clear.

Pakistan's Prime Minister Shehbaz Sharif receives the President of Iran, Masoud Pezeshkian, upon his arrival at the Prime Minister's House in Islamabad, Pakistan, 23 June 2026.
Reuters

The U.S. objective appears to be less about immediate regime change than about convincing Iran that unrestricted pressure on Hormuz will carry an unsustainable military and economic cost.

Iran is defending its most powerful lever

Iran's strategy is built on asymmetry. Tehran cannot match the U.S. in conventional military power, but it can threaten bases, shipping routes and energy flows across a region on which the global economy depends.

Hormuz is therefore not simply a waterway. It is Iran's most important instrument of strategic leverage. Iranian officials have indicated they are willing to discuss mechanisms with Oman to ensure safe passage, while also insisting on Iran's sovereign role in managing the strait. Reuters has reported proposals that would allow ships to transit through Omani waters under specific security arrangements.

This reveals the central tension in Tehran's position. Iran wants to preserve its ability to disrupt shipping while avoiding the long-term economic damage of a permanently closed route. Control matters, but so do oil revenues, domestic stability and the risk of provoking a broader coalition against it.

The internal balance in Tehran is harder to read

The original draft presented the Islamic Revolutionary Guard Corps and hardline factions as having decisively taken control of Iranian decision-making. The available evidence supports a more cautious conclusion. Military pressure has strengthened the political argument of those who oppose concessions, while reformist officials face growing difficulty defending compromise.

However, Iran's political system is rarely governed by a single faction. President Masoud Pezeshkian, Foreign Minister Abbas Araghchi, parliamentary leaders, the security establishment and the office of the Supreme Leader continue to operate within an opaque and contested structure. What can be said with confidence is that every new strike raises the domestic political cost of restraint.

The window for mediation is narrowing

Pakistan has played an important role in maintaining contact between Washington and Tehran, while Oman and Qatar continue their traditional mediation efforts. These channels matter precisely because direct trust between the two sides is almost non-existent.

Yet mediation becomes more difficult after every military exchange. Each attack strengthens those who argue that negotiation is a sign of weakness. Each retaliatory strike makes compromise appear more politically costly. The danger is not only that the existing memorandum fails, but also that the political space required to replace it disappears.

Hormuz is now the centre of the negotiations

The most important issue is no longer simply whether the June memorandum survives. It is whether the parties can agree on a workable security framework for the Strait of Hormuz, through which a significant share of the world's oil and liquefied natural gas passes.

Iran and Oman have discussed mechanisms for safe navigation, although no comprehensive agreement has emerged. Several possible arrangements are under discussion, including clearer responsibilities for the northern and southern approaches, stronger guarantees for the existing traffic separation scheme, joint monitoring, and a greater technical role for commercial operators.

Any agreement would face difficult legal and political questions. Iran is unlikely to renounce its claim to a central security role along its own coastline. The U.S. and its partners are equally unlikely to accept direct Iranian tolls or a system that gives Tehran discretionary authority over international shipping. Any eventual compromise, if one proves possible, will have to recognise coastal sovereignty without turning Hormuz into an instrument of unilateral coercion.

A struggle over the rules of the Gulf

The clashes in July should not be viewed as isolated incidents. They form part of a broader struggle over who sets the rules for navigation, deterrence and military presence in the Gulf.

The Islamabad track has not necessarily collapsed, but it has been significantly weakened. Its survival will depend on whether mediators can transform a fragile pause into practical rules that both parties have a clear interest in observing.

Hormuz has always been more than a shipping lane. It is now the point at which military pressure, energy security and diplomacy converge. Whoever helps shape the next rules governing the strait will also help determine the next phase of Gulf security.

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