Sen. Patty Murray (D-WA) questioned Defense Secretary Pete Hegseth on Tuesday about the escalating costs of the U.S. war with Iran.

The exchange highlights growing tension between the Pentagon and Congress over the transparency of military spending and the long-term fiscal sustainability of the conflict.

The hearing took place at the Senate Appropriations committee on Capitol Hill in Washington, D.C. During the proceedings, Murray challenged the administration regarding a budget request for the Iran war totaling $1.5 trillion [1], [2]. Lawmakers said these rising costs are creating a significant impact on the broader defense budget [3], [4].

Murray directed her questioning toward the hidden costs of the conflict, questioning the defense chief and the department's chief financial officer, Hurst, on the necessity of the funds [4]. The senator focused on the scale of the request, questioning why the administration requires such a massive sum to sustain the current military operations.

Secretary Hegseth faced a new round of questioning from members of Congress as part of a broader effort to oversee the war's execution and financial management [3]. Other senators, including Sen. Murphy, also clashed with Hegseth during the hearing, saying that the proceedings were not a classified setting and required public accountability [2].

The scrutiny comes as the U.S. continues to navigate the strategic and economic pressures of the engagement with Iran. The $1.5 trillion figure [1] has become a focal point for critics who said that the financial burden of the war is exceeding initial projections and diverting resources from other national security priorities [3].

Budget request for the Iran war is $1.5 trillion

The clash between Sen. Murray and Secretary Hegseth reflects a deepening divide over the 'forever war' fiscal model. By centering the debate on a $1.5 trillion price tag, congressional critics are attempting to shift the conversation from strategic military objectives to the concrete economic cost of the conflict, potentially signaling future legislative efforts to cap spending or mandate stricter audits of the Pentagon's war budget.