Four Iraqi airports — Baghdad, Najaf, Erbil, and Sulaimaniyah — have suspended all flights to and from Iran following a directive from the prime minister's office. The move comes days after the United States expanded aviation sanctions under Operation Economic Outcast, targeting any global company doing business with Iranian airlines. Ground-service providers at Iraqi airports, facing the threat of being frozen out of the US dollar system, refused to continue operations. Iraq was one of the last significant air corridors into Iran. Iranian airlines had been operating at least 20 daily flights through Najaf alone, many carrying Shia pilgrims traveling between the two countries' holy cities. After the suspension, only four flights to non-Iranian destinations remained on Najaf's Friday schedule. Passengers now face overland journeys of at least 12 hours. The religious dimension is sharp. Najaf hosts the shrine of Imam Ali, and the route between Iraqi and Iranian holy sites carries enormous cultural and sectarian weight. The Iranian Consulate in Najaf posted a pointed rebuke on X: "Najaf international airport, the shrine of the first Imam of the Shia, and the capital of their last Imam, is closed to the largest Shia country in the world?!" This language is designed to pressure Baghdad from the Iranian side while Washington pressures it from the other. Iraq's central government has issued no formal statement on the suspensions — a silence that speaks volumes. Al Jazeera's Baghdad correspondent noted the government "doesn't want to antagonise" pro-Iranian factions in parliament, even as it complies with US demands. The actual enforcement mechanism is not Iraqi state policy but commercial self-preservation: ground-service companies will not risk secondary sanctions and loss of dollar access. The broader pattern is clear. The UAE and Qatar have already cancelled or restricted Iranian flights. Iran's Supreme National Security Council secretary has warned neighboring states against compliance, but the warnings carry no enforcement mechanism that competes with dollar exclusion. Iran's remaining air routes have shrunk to Turkey, Russia, China, and Armenia. Operation Economic Outcast, launched in August, is systematically severing Iran's remaining commercial connections to the global economy. The aviation sanctions are not targeting military infrastructure or nuclear facilities — they are targeting civilian mobility, pilgrim routes, and commercial airlines. The mechanism is secondary sanctions: the US does not need to bomb the airport, it just needs to threaten the dollar access of anyone who fuels the plane. Iraq is the most visible casualty of this squeeze precisely because its dependencies run in both directions. Its financial system is tethered to the US dollar; its political system includes powerful pro-Iranian factions; its population shares deep religious ties with Iran. Every compliance decision costs it on one side. The 20-year question is whether this pattern of instrumentalized dependency — where small states absorb the friction costs of great-power competition — becomes the permanent architecture of the region.
