The opening hours of the United States’ military campaign against Iran has reminded the world of the staggering speed the US government can turn billions of dollars into smoke and misery.
$5.6 billion US dollars to be exact.
The Trump administration’s joint operation with Israel against Iran has set in motion a maelstrom of economic turmoil, with the effects of the oil trade disruption only just beginning to be felt across the globe.
As a nation plagued by surging wealth inequality and cost of living pressures hurting millions, the US public now has some burning questions for the White House after its somewhat abrupt decision to rain hell down on the Iranian ruling class.
According to three US officials, the Pentagon burned through $5.6 billion (AU$7.82 billion) worth of munitions in just the first two days of the assault.
The extraordinary figure has already ignited concern among US politicians about the pace at which America is consuming some of its most advanced weaponry.
The estimate was sweet vindication for anti-war campaigners, who warn the reckless spending is following a familiar pattern in modern US wars. The opening phase is often the most technologically intense, and the most expensive. But the long-term problem the US has with the current war is quite simple when you look at the logistics.
For example, Iran’s Shahed-136 drones costs roughly $20,000 to $80,000 apiece, while interceptor missiles used to destroy them can set taxpayers back from $4 to $20 million USD.
Pentagon spokesman Sean Parnell attempted to downplay fears about the army’s dwindling stockpiles as chatter over the ballooning budget began to circulate.
“The Defense Department has everything it needs to execute any mission at the time and place of the President’s choosing and on any timeline,” he said.
Behind the scenes, concerns are mounting that the operation could strain American military readiness for other potential flashpoints if it drags on.
Since hostilities began on February 28, US forces have fired hundreds of precision weapons, including the feared Tomahawk cruise missile, at multiple Iranian targets.
US Central Command says more than 5,000 targets inside Iran have been struck using over 2,000 munitions.
That spending rate is triggering a political battle in Washington. The Trump administration is expected to send Congress a supplemental defence funding request potentially totalling tens of billions of dollars to sustain the campaign. Many Democrats, who have already attempted unsuccessfully to restrict further military action against Iran, are expected to oppose it.
Military planners appear to be adjusting their strategy as the campaign moves forward. While Trump predicted the operation to take around four weeks, the butterfly effect on the rest of the region is hard to predict.
Defence Secretary Pete Hegseth and Joint Chiefs Chairman General Dan Caine told reporters the operation is now transitioning away from its heavy reliance on precision munitions.
US forces will instead be relying on laser-guided bombs, which are far more plentiful and dramatically cheaper.
Trump was warned
Before the operation began, General Caine reportedly warned Trump that a prolonged conflict with Iran could drain America’s stockpiles of precision weapons and potentially leave it vulnerable.
The concern was rooted in the reality that US inventories had already been strained by years of military aid to Ukraine and operations across multiple regions.
The administration has publicly dismissed those concerns.
Meanwhile, some analysts say they have been surprised by the sophistication of Iran’s retaliatory strikes.
Iranian attacks have successfully targeted elements of US and Israeli air defence systems, including radar and command-and-control infrastructure.
Russia is also reportedly supplying intelligence to Tehran, helping improve the accuracy of those attacks against American forces.
The fog of war has also punched a hole through the Pentagon’s wallet.
Three American F-15 fighter jets were shot down in a friendly-fire incident involving Kuwait, a mishap estimated to have destroyed roughly $300 million worth of aircraft.
Have we seen this before?
The mounting costs of the Iran campaign fit into a long and expensive history of military involvement in the Middle East.
The wars in Iraq and Afghanistan, which launched after the September 11 attacks, ultimately became the most expensive conflicts in US history. Combined, they are estimated to cost between $4 trillion and $6 trillion (A$8.38 trillion) when long-term expenses such as veterans’ care are included, according to research from Harvard University’s Kennedy School.
Afghanistan alone cost the United States more than $2 trillion (A$2.79 trillion) over two decades, while the wars in Iraq and Syria together have required roughly $2.89 trillion (A$4 trillion) in spending and obligations.
Even before the Iran campaign began, US military actions in the wider Middle East since 2023 had already cost between roughly $9.6 billion and $12 billion, according to estimates from the same research project.
The Iraq War itself was once projected to cost around $100 billion for a two-year campaign. Instead, estimates now place the long-term cost in the trillions of dollars.
Human Rights groups like Oxfam, UNICEF, World Food Programme, and Amnesty International argue that spending of this gargantuan scale could instead fund transformational global programs.
Based on humanitarian cost estimates, $4 trillion could end extreme poverty for many years, fund universal basic education worldwide, provide global access to clean drinking water and sanitation, deliver lifesaving healthcare for hundreds of millions of people, and financial large-scale climate adaptation and food security programs for the most vulnerable.
The United States has spent roughly $20–22 trillion (A$30 trillion) on defence and military activities this century.
