The administration of Donald Trump spent approximately $5.6 billion on munitions during the first two days of military strikes against Iran, according to a report shared with congressional committees a source familiar with the matter said on Tuesday.

The large expenditure highlights the high cost of the early stage of the conflict, which reportedly began on February 28 in coordination with Israel. Lawmakers have expressed growing concern about the rapid use of U.S. military stockpiles, particularly as the defense industry struggles to meet rising global demand.

President Trump recently met with executives from several defense contractors to discuss the Pentagon’s urgent need to replenish weapons supplies. However, the administration has not yet released a public estimate of the total cost of the ongoing military operation.

Members of United States Congress, especially Democrats, have called for detailed briefings on the conflict’s financial cost military readiness, and long-term strategic implications.

During a Senate address Chuck Schumer urged greater transparency, stating that the American public deserves clear explanations when U.S. troops are placed in harm’s way.

Officials expect the White House to soon request additional funding, with some estimates suggesting a package of around $50 billion or possibly more.