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The US found a surprisingly effective lever against Iran-backed militias in Iraq: turn off the money printer. Or more precisely, stop the pallets of cash from leaving the Federal Reserve Bank of New York.
The Trump administration blocked approximately $500 million in physical dollar shipments to Iraq in late April 2026, a move designed to choke off funding channels used by armed groups like the Popular Mobilization Forces. Iraq, facing the prospect of a cash-starved economy, agreed to stop transferring dollars to those militia networks.
How dollars become bullets
Here’s how the pipeline works. Iraq earns billions from oil exports, and those revenues are held in accounts at the New York Fed. Physical cash shipments, literal planeloads of dollars, get flown to Baghdad to meet domestic demand for hard currency. The problem is that a meaningful chunk of those dollars has historically been siphoned off by militia-linked networks and smuggled to Iran or used to fund armed operations.
The April 2026 blockage was triggered by an escalation in militia attacks on US interests that began in late February 2026. Hundreds of attacks pushed Washington past its tolerance threshold. Rather than responding with airstrikes alone, the administration reached for the financial toolkit.
The cash freeze was paired with a partial pause in security cooperation programs, signaling that Washington was willing to let the bilateral relationship deteriorate if Baghdad didn’t act on militia financing.
Electronic transfers for legitimate trade were left untouched. Iraqi businesses importing goods could still access dollars through the banking system. The squeeze was targeted specifically at physical cash, which is harder to trace and easier to divert.
A pattern years in the making
This wasn’t Washington’s first attempt to use financial pressure against militia networks operating inside Iraq’s economy. Between 2023 and 2024, the US sanctioned over two dozen Iraqi banks that had connections to militia organizations. Those earlier rounds of sanctions targeted institutions suspected of facilitating dollar smuggling or processing payments for armed groups.
State-owned banks like Rafidain also came under pressure over their role in distributing salaries to PMF members. The Popular Mobilization Forces occupy a strange dual role in Iraqi society: they’re officially part of the state security apparatus, integrated into the Iraqi military structure after the fight against ISIS, but many factions within the PMF maintain loyalty to Tehran rather than Baghdad.
What the resumption tells us
By early July 2026, air shipments of physical dollars to Iraq had partially resumed. That timeline, roughly ten weeks of financial pressure, suggests Baghdad moved relatively quickly to meet US demands.
Electronic transfers were preserved while physical cash was blocked. Washington can selectively squeeze specific channels without cratering an entire economy. Iraq’s economy runs on oil dollars, and the physical cash component is critical for sectors that operate outside the formal banking system. Travel, medical expenses, and education costs all rely on physical dollar availability.
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