Israel-Iran-America War Is Breaking the Global Bank

The Slate Bureau

When the missiles started flying, the auditors reached for their calculators — and they haven't winked since.

The Israel-Iran-America conflict, dubbed Operation Epic Fury, has already burned through an estimated $120 billion — and that figure doesn't begin to capture the full damage. It excludes long-term debt obligations, compounding economic fallout, and the kind of generational costs that don't show up on any Pentagon spreadsheet. What it does tell us is stark enough: this war is expensive, accelerating, and nobody really planned for the bill.

The numbers are staggering from day one. According to the Center for Strategic and International Studies (CSIS), within the first six days alone, American forces expended more than $11.3 billion worth of munitions. That spending was largely unbudgeted — improvised, essentially, in real time. Analysts drawing on Pentagon briefings, CSIS reports, Israeli Finance Ministry data, and leading think tanks now estimate that somewhere between $480 million and $550 million is being spent every single day on air defenses, strikes, and military mobilization. Every. Single. Day.

To put that in perspective: that's roughly the annual education budget of a mid-sized nation, gone before the sun sets.

For Israel, the economic haemorrhage is relentless. Weekly losses from the conflict — driven by mobilization of reservists, shuttered schools, closed offices, and collapsed productivity — are estimated at up to $3 billion per week. Growth forecasts have already been slashed, with full-year projections cut from 5.2% to 4.7%. A prolonged campaign, analysts warn, could shave 1% or more off GDP every single quarter. The math is brutal: keep fighting long enough, and the economic damage begins to rival the military one.

Iran's losses are of a different magnitude entirely. Thousands of sites have been struck — military bases, nuclear-related facilities, energy assets, civilian infrastructure, ports. Rebuilding will cost tens of billions. Oil and gas facilities face repair timelines measured not in weeks but in years. Already battered by sanctions before the first strike landed, the Iranian economy now faces a catastrophic GDP contraction, lost oil export revenue, disrupted food and grain imports, inflation spikes, and severe currency pressure. When you're starting from a weakened position and someone kicks your legs out, the fall is much harder.

Here's the uncomfortable truth that gets buried under the battlefield headlines: the rest of the world is paying too, whether it signed up for this war or not.

The World Trade Organisation estimates a 0.3% hit to global growth if energy prices remain elevated — a seemingly small number that translates to hundreds of billions in lost output worldwide. Europe, which imports heavily from the Gulf region, could absorb a GDP hit of around 1%. The risks ripple outward from there: stagflation fears, delayed central bank rate cuts, reduced business investment, and supply chain fractures stretching from fertilizer markets to metal trading to global shipping lanes now rerouted with conflict surcharges baked in.

These are not abstract economic projections. They are costs already being loaded onto consumers, businesses, and governments that had nothing to do with launching a single missile.

For Washington, the spending didn't begin with Operation Epic Fury. Brown University's Costs of War Project estimated that American expenditure across the wider Middle East — supporting Israel, conducting operations against Iranian proxies including the Houthis in Yemen, maintaining naval deployments — had already reached between $9.65 billion and $12.07 billion through September 2025. The current campaign has blown well past those baselines.

What makes this moment different from previous Middle East engagements isn't just the scale — it's the speed. Money is being spent faster than it can be accounted for, faster than legislatures can authorize it, and far faster than economies can absorb the shock.

The analysts are unambiguous on one point: the true cost of this conflict will dwarf everything visible right now. Direct military spending is only the opening act. Reconstruction, refugee flows, diplomatic realignment, lost decades of regional investment, and compounding debt service will stretch the reckoning across years — potentially decades.

A swift de-escalation could, in theory, cap the damage at levels the global economy could eventually absorb. But every week the conflict continues, every new target list that gets activated, the long-term burden grows heavier.

Hundreds of billions. Potentially trillions, when all the factors finally compound.

Operation Epic Fury has a name that sounds like a Hollywood blockbuster. The invoice, when it finally arrives in full, will feel a lot more real.