Iran Conflict Adds "Wobble" to US Debt

The U.S. national debt currently stands at over $38.8 trillion, a figure that has been climbing by roughly $1 trillion every 100 days. This debt is now significantly larger than the nation's entire economic output, with a debt-to-GDP ratio of approximately 124%. Historically, spikes in the national debt are closely linked to military conflicts. The Civil War, for example, expanded the national debt by more than 4,000%, from $65 million in 1860 to $2.7 billion by the war's end. The costs of wars in Afghanistan and Iraq have contributed to the debt's recent dramatic increases. Recent military activities in the Middle East since October 2023 have added between $9.65 billion and $12.07 billion to U.S. spending. The current military buildup focused on Iran is estimated to cost between $25 million and $40 million per day. The specific American operation against Iran's nuclear program in 2025, dubbed "Operation Midnight Hammer," is estimated to have cost the U.S. government around $2.25 billion. This single operation highlights the significant, direct expenses involved in the conflict. This new spending comes as interest payments on the existing debt are already soaring. In fiscal year 2025, the net interest paid on the debt reached nearly $971 billion, an amount that exceeded the entire defense budget. The concern over the U.S. fiscal situation is not new. All three major credit rating agencies have downgraded U.S. debt from their highest ratings. S&P issued its first-ever downgrade in 2011, followed by Fitch in 2023 and, most recently, Moody's in May 2025. Reasons cited for the downgrades include the growing national debt, a "sustained deterioration in public finances," and an "erosion in standards of governance."