Publications /
Policy Paper

Back
The Multiple Costs of the US–Iran War - From Hormuz to Europe and South Asia: the widening economic and political geography of the conflict
Authors
October 29, 2026

Wars are decided by those who hold military power, but their costs are increasingly borne by those who have little or no voice in the decisions that start them. The US–Iran war shows this imbalance very clearly. Its economic consequences have gone far beyond the battlefield and have disrupted energy markets, trade routes, food supplies, public finances and investment in the Gulf, Europe, Africa and Asia. The most striking feature of the conflict, however, is not only the size of the damage but its very unequal distribution. Major hydrocarbon exporters have suffered severe economic contractions in spite of higher oil prices. Poorer importing countries face growing fiscal pressure. The United States, relatively protected at the aggregate level, has passed a substantial part of the costs to its own consumers and to economies far beyond its borders. China, for its part, was able to draw on its strategic reserves, which shows that economic resilience does not necessarily follow from military superiority.

The most lasting consequences of the war may, in the end, be political rather than economic. The war has exposed the limits of American security guarantees, put in question the economic model of the Gulf, and further weakened confidence across the Atlantic. The central paradox is that military power can start and sustain a conflict without controlling its economic consequences, or deciding who finally pays for them. In an increasingly interconnected world, the capacity to wage war and the capacity to absorb its costs have become dangerously separated.

The war may end, infrastructure may be rebuilt and trade may recover. What will be much harder to restore is confidence in the political and security arrangements on which the global economy has long depended.

RELATED CONTENT

  • Authors
    October 29, 2026
    Wars are decided by those who hold military power, but their costs are increasingly borne by those who have little or no voice in the decisions that start them. The US–Iran war shows this imbalance very clearly. Its economic consequences have gone far beyond the battlefield and have disrupted energy markets, trade routes, food supplies, public finances and investment in the Gulf, Europe, Africa and Asia. The most striking feature of the conflict, however, is not only the size of the ...
  • Authors
    Niagalé Bagayoko
    Eugène Berg
    Pierre Berthelot
    Vincent Campredon
    Christophe Chabert
    Alain Oudot De Dainville
    Emmanuel Veron
    October 28, 2026
    Bientôt disponible en vente. Cet ouvrage est issu de la 20e édition des Dialogues Stratégiques, organisée le 6 mai 2026. Il s’articule autour de deux thématiques : « Souverainetés critiques : sécuriser les infrastructures essentielles et les ressources stratégiques » et « La Méditerranée : entre coopération régionale et rivalités globales ». La première partie examine les conditions dans lesquelles les États peuvent protéger leurs infrastructures et maitriser leur accès au ...
  • Authors
    October 13, 2026
    “Every gun that is made, every warship launched, every rocket fired signifies in the final sense, a theft from those who hunger and are not fed, those who are cold and are not clothed.”President Dwight Eisenhower, April 16, 1953 This paper examines the economic and human impacts of the first six months of the Iran war—from February to the end of August 2026—on Iran’s Arab neighbors and compares these impacts with those on the three countries directly involved—Iran, Israel and t ...
  • Authors
    Lina Jaoid
    October 8, 2026
    In the two years since the fall of Bashar al-Assad in Syria, Russia has restructured its Mediterranean presence. Although Russia’s limited and increasingly conditional access to the Khmeimim and Tartus facilities in Syria has been preserved, its presence in the country has morphed from Assad’s ‘patron-client’ configuration to a more negotiated engagement. Simultaneously, Russia has upgraded its force-projection and logistical infrastructure in eastern Libya, giving it an access path ...
  • Authors
    September 30, 2026
    On August 7, 2026, Saudi Arabia, Turkey, and Pakistan signed the Mecca Joint Défense Agreement, a collective-defense pact widely compared to NATO’s Article 5. This essay argues that the comparison is misleading. Mecca borrows NATO’s language of solidarity without yet possessing NATO’s institutional machinery, and the Houthi offensive against Saudi Arabia in September 2026 provided an early and revealing test of what the agreement actually means in practice. Neither Pakistan nor Turk ...
  • Authors
    August 11, 2026
    The Mecca Agreement: A First Step Towards a New Regional Security Architecture? On 7 August, Saudi Arabia, Türkiye and Pakistan signed the Mecca Agreement, a trilateral defense pact aimed at strengthening collective security and defense cooperation between the three countries. At its core lies a collective defense commitment under which an attack on one member is considered an attack on all three. While many details concerning its practical implementation remain unclear, the agreeme ...
  • Authors
    August 7, 2026
    THE END OF AN ERAThe US-Israeli war on Iran, a 'little excursion' envisaged to be over within a matter of weeks, has entered its fourth month. Shock waves ripple across the globe. This war is just one in a series of recent crises which have fractured the international community, making the decades of the 2020's among the most disruptive in recent history. Each crisis compounds the deleterious effects of those which came before. The war in Iran is no exception. It abruptly stalled ec ...
  • Authors
    July 17, 2026
    The close relationship between energy and geopolitics is well established. The same holds true for several armed conflicts. In recent years, however, the conflict most closely intertwined with energy has been the 2026 Iran War, which began on February 28. A ceasefire has been in effect since April 8, and a Memorandum of Understanding (MoU) was signed by Iran and the United States on June 17. Nevertheless, as demonstrated by Iran's attacks on commercial vessels and recent U.S. strike ...
  • Authors
    July 17, 2026
    Les relations, très étroites, entre l’énergie et la géopolitique sont bien connues. Cela vaut aussi pour plusieurs conflits armés. Mais, dans la période récente, le conflit le plus lié à l’énergie est la guerre d’Iran de 2026, qui a débuté le 28 février. Un cessez-le-feu est en vigueur depuis le 8 avril et un protocole d’accord a été signé le 17 juin par l’Iran et les États-Unis. Mais, comme le montrent les attaques de l’Iran contre des navires et les frappes américaines de ces dern ...