Iran War Adds to US Debt Worries

The current conflict is adding to a national debt that already exceeds $38 trillion. Historically, a nation's debt-to-GDP ratio rises during wars and recessions. Projections from before the latest escalation showed debt held by the public is on track to surpass the record of 106% of GDP, set just after World War II, within four years. This new military engagement comes on top of significant recent spending. Since late 2023, the United States has already expended nearly $34 billion on conflicts involving Iranian proxies such as Hamas, Hezbollah, and the Houthis. This figure includes $22 billion to support Israel and an additional $12 billion for other allies and direct U.S. military actions. The direct costs for U.S. forces are substantial. The current military deployment aimed at Iran is estimated to cost around $30 million per day. For comparison, a more limited 37-hour operation against Iran's nuclear program in 2025 cost the U.S. government an estimated $2.25 billion. Wars have consistently been a primary driver of America's national debt. The Revolutionary War led to a debt of over $75 million. The Civil War saw the debt increase by over 4,000%, and financing for World War I also led to a significant spike. The wars in Iraq and Afghanistan, financed primarily through borrowing, contributed an estimated $8 trillion to the debt between 2001 and 2022. The economic impact extends beyond direct military outlays. The conflict is causing volatility in global energy markets, with Brent crude oil prices jumping roughly 8.5% to about $79 a barrel shortly after the recent escalation. Such spikes in energy costs can fuel inflation and create broader economic instability. This increased military spending is occurring at a time when interest payments on the national debt are already a massive government expense. For fiscal year 2024, interest payments on the debt reached $882 billion, exceeding the $874 billion spent on national defense. The Congressional Budget Office projects that by 2026, the U.S. government will pay $1 trillion annually just to cover interest on its debt. The escalating conflict is also benefiting defense contractors. In the wake of the recent U.S. and Israeli strikes, the iShares U.S. Aerospace & Defense ETF has seen a significant surge. Major defense firms like Lockheed Martin and Northrop Grumman have seen their stock prices rise by 40% and 46% respectively since the first major strikes on Iranian facilities began.