The Pentagon updated its Defense Casualty Analysis System database on October 9, 2026, raising the official count of U.S. service members killed in connection with the war against Iran, which began on February 28, 2026, from 18 to 21

Armed conflicts between and within states and the people and politics behind them.

The armed conflict between the United States and Iran and the political fight it set off at home, from strikes and the naval blockade around the Strait of Hormuz to negotiations over Iran's nuclear program. Debated through war powers, munitions stocks and household costs.