Trump Wants Arab Allies to Pay for the Iran War — It Worked in 1991. Can It Work Now?

What the White House Said

At a White House press briefing on March 30, 2026, Press Secretary Karoline Leavitt was asked whether Arab countries would help pay for the Iran war. She replied: "I think it's something the President would be quite interested in calling them to do," adding that "it's an idea that I know that he has and something that I think you'll hear more from him on," according to Reuters and Military Times, both of which obtained the full briefing exchange.

Leavitt also said at the same briefing that talks with Iran to end the conflict are continuing and progressing well, and that "what is said publicly is, of course, much different than what's being communicated to us privately," according to Reuters. She indicated that Iran had privately agreed to some of Washington's points, although this could not be independently confirmed from available sources as of March 30, 2026.

The New York Times reported that Leavitt specifically used the phrasing "would be quite interested in calling them to do" in reference to Arab countries helping cover costs, according to the Times' live updates.

Trump had also told reporters on Sunday that he considers "regime change" in Iran effectively complete, describing successive layers of Iranian leadership as having been "decimated" and "mostly dead," and saying the U.S. is "dealing with different people than anybody's dealt with before," according to Reuters.

What the Iran War Is Costing

The Pentagon told Congress that the first six days of the war alone cost more than $11.3 billion in unbudgeted expenditures, according to the New York Times and The Guardian. That figure did not include costs of the force buildup prior to the war's start, ongoing operational and support costs, or certain classified programs, according to The Guardian's analysis of the Pentagon briefing.

The Center for Strategic and International Studies (CSIS) estimated the cost had reached approximately $16.5 billion by Day 12, according to CSIS's published analysis. CSIS reached its estimates by working backward from the Pentagon's $11.3 billion Day 6 figure and adding estimated operational and support costs using Congressional Budget Office methodology, according to The Guardian's breakdown of the CSIS methodology.

The war entered its fifth week on March 28, 2026. No updated official cost estimate has been made public for weeks 2 through 5, as of March 30, 2026. The total cost through the end of March is not confirmed from available public sources — the CSIS Day 12 estimate of $16.5 billion is the most recent publicly available figure.

For comparison: $5.6 billion in munitions were used in just the first two days of the war, according to defense officials cited in congressional briefings reported by the New York Times and Washington Post. USA Today noted that the $11.3 billion spent on munitions in the war's first days alone exceeded the entire annual budget Congress allocated to the National Cancer Institute, which was $7.4 billion, according to USA Today's analysis.

The 1991 Precedent: When Allies Covered 80% of the Cost

The closest historical parallel to what Trump is proposing is the Gulf War cost-sharing arrangement of 1990-1991. The U.S. Department of Defense estimated the total cost of the Gulf War at $61.1 billion, according to NBC News. Allied contributions covered more than 80% of that total, according to the same source.

The specific breakdown of commitments for January through March 1991: Saudi Arabia and Kuwait each pledged $13.5 billion; Japan pledged $9 billion; Germany pledged $5.5 billion; South Korea pledged $280 million, according to the New York Times's 1991 reporting. A 2011 compilation on Reddit and multiple secondary sources confirm the broader figure: Gulf states collectively contributed approximately $36 billion, and Germany and Japan contributed approximately $16 billion, totaling approximately $52 billion of the $61.1 billion U.S. cost estimate, according to these sources.

The arrangement worked for several structural reasons: Saudi Arabia and Kuwait were the direct beneficiaries of the war effort, having both been invaded or threatened by Iraq. Japan and Germany could not contribute combat forces due to post-World War II constitutional restrictions but contributed financially. The relatively short duration of the conflict — the ground war lasted 100 hours — kept costs bounded and manageable for allied planning.

Why the Current Situation Is Different

The Iran war presents a structurally more complicated cost-sharing scenario than 1991, for several reasons:

Duration and scope. The Gulf War's ground phase lasted 100 hours; the Iran war is in its fifth week with no ceasefire in sight. Open-ended conflicts are harder to fund through allied burden-sharing because the total commitment is unknown at the time of negotiation.

Gulf state ambivalence. In 1991, Saudi Arabia and Kuwait were unambiguous beneficiaries — one had been invaded, the other was directly threatened. In 2026, Gulf states are simultaneously suffering from Iranian missile and drone attacks (making them sympathetic to the war's goals) and sustaining economic damage from the Strait of Hormuz closure and energy supply disruptions. Kuwait's own water desalination plant was struck by an Iranian attack on March 29, 2026. Their motivation to pay exists, but they are also victims of the conflict in ways that complicate a straightforward financial contribution framework.

The NATO friction. Spain's airspace closure, Europe's refusal to contribute militarily, and Trump's "paper tiger" criticism of NATO have damaged the political architecture within which cost-sharing negotiations typically occur. In 1991, allies contributed partly out of fear of being seen as free-riders in an alliance they valued. That dynamic is currently under strain.

Scale of costs. If the Iran war continues at the rate suggested by the Day 12 CSIS estimate ($16.5 billion), a full 30-day month would imply costs in the range of $40 billion or more — larger than the total Gulf War cost that allies collectively funded. Whether Gulf states can or would commit to funding at that scale is unknown.

Zelensky's Gulf tour on March 28-29 — during which Ukraine signed 10-year security cooperation deals with Saudi Arabia and Qatar and secured a year-long diesel supply agreement — illustrates that Gulf states are actively being courted by multiple parties simultaneously and have significant negotiating leverage over their resources and support.

What Leavitt's Statement Actually Means

Leavitt's statement was careful: she described the cost-sharing ask as "an idea that I know that he has" and said "you'll hear more from him on" it — not that negotiations had started or that any country had been approached. It is a signal of Trump's thinking, not a confirmed policy or formal request.

The statement comes in the context of a broader Trump pattern: asking allies to contribute financially to security arrangements that the U.S. funds. Trump has made similar demands of NATO allies on defense spending (the 5% GDP target), of Japan and South Korea on host-nation support costs, and of Gulf states during his first term.

No Gulf state government had publicly responded to Leavitt's statement as of March 30, 2026.