Visiting lecturer, Paris School of International Affairs (PSIA)
For years, diplomacy between Iran and the United States has largely been conducted through a familiar group of intermediaries.
Oman has traditionally provided the most discreet and trusted channel, while Qatar, Pakistan and Turkey have used their relations with both sides to facilitate contacts or transmit messages.
Yet the continuing deadlock in negotiations has now encouraged Washington to widen the diplomatic circle.
In recent days, Austria and Greece have separately opened contacts with Tehran after consultations with US Secretary of State Marco Rubio, according to media reports.
The unexpected involvement of Austria and Greece suggests that European diplomacy, long marginalized in the Iran-US relationship, may be making a cautious return in the context of a regional military escalation.
The sequence of recent contacts is striking. US Secretary of State Marco Rubio met Austrian Foreign Minister Beate Meinl-Reisinger in Washington on August 11 and spoke by telephone with Greek Foreign Minister George Gerapetritis the following day. On August 13, both European ministers held separate conversations with Iranian Foreign Minister Abbas Araghchi. Although the US State Department denied asking them to transmit messages, the timing was probably not coincidental. The State Department subsequently confirmed that Iran had been discussed, while Austria formally offered Vienna as a venue for potential future talks. Greece emphasized freedom of navigation and maritime security in its exchanges with Tehran.
This is not yet formal mediation. Neither Austria nor Greece has the experience, access or accumulated trust that Oman possesses. Their involvement should instead be understood as an exploratory attempt to identify additional channels at a moment when traditional diplomacy is struggling. The proliferation of intermediaries itself is revealing: it demonstrates not the vitality of the diplomatic process, but its fragmentation.
Austria’s possible role is rooted in diplomatic history. Vienna hosted negotiations that culminated in the July 14, 2015 nuclear agreement, formally known as the Joint Comprehensive Plan of Action (JCPOA). It is also home to the International Atomic Energy Agency, which would likely play a central role in verifying any future settlement concerning Iranian nuclear activities. Austria can therefore offer more than a neutral meeting room. It provides an institutional environment closely associated with nuclear diplomacy, technical verification and the memory of an agreement that once appeared capable of containing the Iranian nuclear crisis.
Vienna nevertheless carries contradictory symbolism. For Iranian officials, it recalls the JCPOA’s acceptance of limited Iranian enrichment for civilian purposes and the partial lifting of sanctions. But it also evokes the subsequent collapse of the agreement after the first Trump administration withdrew from it in 2018. Austria cannot repair that breach of confidence on its own. Its principal advantage is therefore procedural rather than political: it can provide a discreet and credible setting in which the United States, Iran and the IAEA might clarify their positions.
Greece brings a different form of leverage. As one of the world’s leading maritime nations, it has direct interests in the security of the Strait of Hormuz and the Red Sea. The disruption of navigation through Hormuz is not an abstract geopolitical problem for Athens. It affects Greek-owned shipping, insurance costs, energy prices and the stability of international trade. Greece can consequently address Iran not only as a European Union member and US ally, but also as the representative of an industry directly exposed to the consequences of escalation.
This maritime dimension may make Athens useful in discussions focused on practical arrangements rather than an immediate comprehensive agreement. Measures guaranteeing freedom of navigation, reducing threats against commercial vessels or creating communication mechanisms to prevent incidents at sea could be easier to negotiate than the most divisive nuclear and security questions. Greece could contribute technical knowledge and political advocacy to such discussions, although it lacks the capacity to provide Iran with the sanctions relief or security guarantees Tehran ultimately seeks.
The emergence of Austria and Greece also exposes the decline of the traditional European powers in the Iranian diplomatic arena. France, Germany and the United Kingdom were central to the nuclear negotiations that began in the early 2000s. Since then, however, the credibility of the European trio has deteriorated in Tehran and the three countries are facing bilateral diplomatic crises in their relations with Tehran. Iranian leaders accuse them of failing to protect the economic benefits of the nuclear agreement after the American withdrawal and of increasingly aligning themselves with Washington’s coercive approach. The mutual distrust generated by sanctions, mutual accusations of security “infiltration” and spying, regional conflict and disputes over Iran’s nuclear activities has left little space for the earlier model of European mediation.
This marginalization is being reinforced by the widening security confrontation. The Financial Times reported Wednesday that Iran had considered attacking US military targets in Europe, including in Bulgaria and Cyprus, if Washington further escalated the war.
Reuters reported Wednesday that a NATO official said the alliance was prepared to address any threat and take necessary action to defend its members. The official cited four occasions earlier this year when NATO air defenses intercepted Iranian ballistic missiles heading toward Turkey, saying they demonstrated the strength and effectiveness of NATO’s deterrence and defense posture.
Smaller European countries may therefore benefit from carrying less political baggage. Austria is associated more closely with dialogue than with strategic pressure and maintained substantial economic and energy ties with the Islamic Republic throughout the 1990s and 2000s. Greece, for its part, has generally remained outside the most confrontational debates over Iran. Yet their relative neutrality should not be overstated. Both countries are members of the European Union and close partners of the United States. Tehran will ultimately judge their usefulness by their ability to secure concrete concessions from Washington, not by the cordiality of their diplomatic rhetoric.
Their involvement also reflects the widening international cost of the conflict. The restriction of traffic through Hormuz, a corridor through which roughly one-fifth of global oil consumption normally passes, has transformed the crisis from a bilateral confrontation into a global economic emergency. Washington wants the strait reopened, while Tehran sees control over navigation as one of its most powerful remaining sources of leverage. Austria and Greece are entering the process because the consequences of failure now extend far beyond the Middle East.
The immediate objective should therefore be modest. Vienna and Athens are unlikely to replace Muscat, Doha or Islamabad, and multiplying intermediaries can produce contradictory messages and allow both Iran and the United States to avoid making difficult decisions. Their most useful contribution would be to support a coordinated diplomatic framework: Austria concentrating on nuclear verification and the venue for talks, Greece on maritime security, and traditional regional mediators on political communication and guarantees. Ultimately, no mediator can compensate for a lack of political will to pursue a diplomatic solution rather than military escalation. Austria and Greece cannot make that choice on behalf of Washington and Tehran, but they may help create the conditions in which diplomacy becomes possible.
Their return is therefore neither a diplomatic breakthrough nor an irrelevant gesture. It reflects an increasingly marginalized Europe urgently seeking new ways around a dangerous impasse. If carefully coordinated, these unlikely European channels could help prepare the ground for renewed negotiations. Otherwise, they risk becoming yet another improvised attempt to contain a conflict that its principal actors have so far proved unable to resolve. Europe nevertheless has a strong interest in assuming a more active diplomatic role: European states are already bearing many of the conflict’s economic and security consequences, yet they possess neither the political leverage to shape a settlement nor the military capacity – and, in most cases, the willingness – to impose one.
