The ongoing Iran war has pushed US government borrowing costs to their highest levels since 2007, adding billions in potential interest payments to the national debt. Three months of conflict have already significantly increased federal expenses, straining an already burdened budget.

Treasury yields have climbed steadily as investors demand higher returns on US debt securities, reflecting increased risk perceptions. The surge in borrowing costs threatens to crowd out other government spending priorities and could force policymakers to make difficult choices about deficit management in the coming fiscal year.

Financial markets remain volatile as the situation develops, with analysts warning that prolonged hostilities could trigger a broader debt crisis. The Congressional Budget Office estimates that sustained military action could add billions more to annual interest obligations, further complicating the nation's fiscal outlook.