When Qatar's Prime Minister Sheikh Mohammed bin Abdulrahman Al Thani traveled to Tehran on 27 August, the visit came at a precarious moment in the Iran–United States (US) conflict. The diplomatic push followed visits to Tehran by senior officials from Muscat and Islamabad and aimed to reduce escalation, revive dialogue, and address the ongoing crisis in the Strait of Hormuz.
The urgency became clearer within days. On 31 August, the United States and Iran exchanged attacks for the first time in nearly a month, followed by a fresh round of sanctions from Washington. Qatar continued to call for a return to negotiations and to coordinate with Oman, Pakistan and other regional actors. Diplomacy, economic pressure, and military confrontation are unfolding simultaneously.
The war raises a hard question about what mediators can achieve while the parties remain far from a settlement. Recent efforts by Qatar, Oman and Pakistan suggest an answer. Mediation involves preserving relationships, communication channels, and political access, and turning them into limited arrangements that constrain escalation and keep the route open to broader negotiations.
The Gulf tradition of the Majlis offers a useful analogy. Its value lies in maintaining a space for exchange despite disagreement. Wartime mediation can go further, using that space to carve out limited areas of cooperation while broader political agreement remains out of reach.
Qatar and Pakistan helped broker the June memorandum of understanding between Iran and the United States, which extended the 21 April ceasefire and established a sixty-day window for negotiations to end the war. The arrangement did not hold. The two sides remained at odds over control of the Strait and the US naval blockade of Iranian ports. Fighting resumed and implementation stalled. Qatar and Pakistan maintained their channels to both capitals throughout, but their efforts proved insufficient to overcome the trust deficit and secure implementation. Access – while essential to mediation – does not, on its own, guarantee success. Its value in wartime lies in whether it can be converted into cooperation on narrower, achievable objectives when a comprehensive settlement proves unattainable.
Qatar has continued to communicate with Washington and Tehran; Oman has focused on the Strait of Hormuz, and Pakistan on restoring broader negotiations. This division of labor draws on each mediator's unique relationships and reinforces regional ownership of the process.
Incremental mediation during war
The Strait of Hormuz offers the clearest example of what the mediation function can achieve incrementally. Before the war, approximately a quarter of the global seaborne oil trade, almost one-fifth of the global LNG trade and more than 30 percent of globally traded urea, one of the most important fertilizers in modern agriculture, passed through the strait. Disruption therefore reverberates across energy, shipping and food markets, with consequences for import-dependent countries. During Sheikh Mohammed's visit to Tehran, discussions included a proposed temporary shipping corridor through the strait and a joint mine-clearing project, building on arrangements that Oman and Iran had already been developing to restore safe navigation in the Gulf. Although these measures leave the underlying US–Iran dispute untouched, they can nonetheless advance where the comprehensive track has stalled because each party has an interest in them beyond the wider disagreement. Tehran seeks revenue from passage and acknowledgment of its position in the waterway, Washington and its partners seek lower energy prices and freedom of navigation, and neither side must concede its central war aim to accept a corridor. The mediator's contribution is to identify that overlap and give it a form both sides can accept.
Similar forms of incremental mediation have produced significant results during the Russia–Ukraine war. The Black Sea Grain Initiative, mediated by Türkiye and the United Nations in 2022, enabled Ukrainian grain exports, significantly mitigating the global food crisis by helping contain soaring food prices and enabling tens of millions of tons of trapped grain to reach international markets. Successive prisoner exchanges have produced important humanitarian outcomes. Neither produced a peace agreement. The grain initiative's collapse also shows that functional arrangements are provisional and depend on continued mediation to renew them, which is one reason the survival of the mediation function matters beyond any single agreement.
The mediator's paradox
The ability to perform this function depends on relationships that can themselves become liabilities. Qatar's access to Hamas made Doha the target of the Israeli airstrike of 9 September 2025, carried out while Hamas negotiators were discussing a US-backed Gaza ceasefire proposal. On 6 September this year, Israeli Prime Minister Benjamin Netanyahu described Qatar as a “hostile state" and defended the attack. Here lies the mediator's paradox: the relationships that grant a mediator access also expose it to pressure, attack, and delegitimation, and so constrain its room for maneuver.
The Iran conflict displays the same logic. Doha is a close security partner of Washington and hosts CENTCOM's forward headquarters, while maintaining longstanding relations with Tehran and sharing the world's largest gas field with Iran. That combination is the source of its access to both capitals. It is also the reason Qatar has been hit. Iranian attacks on Ras Laffan in March damaged the world's largest LNG complex, reducing Qatar's export capacity by an estimated 17 percent at a cost of around $20 billion in annual revenue. The wider disruption contributed to a 7 percent year-on-year contraction in the economy in the first quarter of 2026. Doha has publicly rejected Tehran's claim that its attacks were directed solely at US interests, citing documented strikes on Qatari civilian and energy infrastructure.
Doha has continued to engage Tehran despite these costs, illustrating a feature of state mediation that models of the neutral third party tend to obscure. Mediators operate within structures of power and interest. Qatar's security relationship with Washington, its economic interdependence with Iran, and its grievances against Tehran shape both its access and the limits of its leverage. The relevant test of a mediator is whether it can translate those relationships into cooperation that the parties would otherwise fail to achieve, and equidistance is a poor guide to that.
Measuring mediation in wartime
The disagreements between Washington and Tehran remain substantial, and the exchange of attacks on 31 August confirms that coercion and diplomacy will continue to run in parallel. A comprehensive settlement may remain out of reach for some time.
Mediation is usually measured by visible outcomes: agreements signed, ceasefires announced, and negotiations concluded. In active wars, a second measure deserves equal weight: whether the capacity for dialogue endures when an agreement fails. The June memorandum collapsed, but the channels that produced it endured. Those channels are now carrying proposals for shipping corridors and mine clearance that could reduce immediate risks while preserving the route back to broader talks.
Sheikh Mohammed's Tehran visit should be judged on those terms, and on whether the access it maintained can be converted into operational arrangements, well before any further US–Iran agreement is in sight.
In a fragmenting regional order, one of mediation's most important functions is therefore to keep the diplomatic majlis open when almost every other door has closed.
The opinions expressed in this article are those of the author and do not necessarily reflect the views of the Center for Conflict and Humanitarian Studies