Bond Market Sends Trump New Inflation Warning — Iran War Energy Spike Driving Treasury Yields Higher; Growing Midterm Risk

On June 1, 2026, analysts and financial media reported that the bond market is sending Trump a new inflation warning: the Iran war's energy price spike — Brent crude above $100/barrel — has spread into the US Treasury bond market, causing longer-term interest rates to climb. The Associated Press/MPR News and Washington Post reported this as a growing economic and political liability for Republicans ahead of the November 2026 midterm elections. Penn Wharton Budget Model director Kent Smetters attributed approximately 40% of the rise in 30-year Treasury yields to the Iran war and tariff-driven inflation, with the remaining 60% attributable to deficit spending expectations from the 'One Big Beautiful Bill' (CBO estimate: +$4.1T over 10 years). The world is becoming more reluctant to lend money to the US government at prior rates, analysts said. The compound pressure of high energy costs (from Iran war), elevated CPI inflation (3.8% in April 2026 — a 3-year high), and rising Treasury yields is adding to the Republican Party's midterm headwinds, with Trump's approval rating at record second-term lows across multiple polls.