The United States and Iran announced a ceasefire on April 7, 2026, ending 40 days of war. The U.S. military operation in Iran was named Operation Epic Fury.

After a month of fighting, the U.S. had used over 850 Tomahawk missiles, a sea- or ground-launched cruise missile with a 1,500-mile range. The United States may have deployed over 30% of its current Tomahawk missile stockpile since the start of the Iran war. Roughly 9,000 Tomahawk missiles have been built by the U.S. since the 1980s.

In 2025, the U.S. budgeted for 57 Tomahawk missiles and procured 22. Producing and deploying missiles can take 18 to 24 months because certain components need to be manufactured before being assembled.

According to the Center for Strategic and International Studies, the United States used between 50% and 80% of its THAAD interceptor missile stockpile in its war with Iran. The U.S. has eight THAAD systems, which operate by shooting a missile without an explosive payload, relying on kinetic energy to destroy incoming missiles. Munitions from a Korean THAAD system were sent to the Middle East for the Iran conflict.

Two types of surface-to-surface missiles used by the U.S. have a range of 200 to 250 miles. Such missiles are used for precision strikes against military targets such as air defenses or enemy troops. The U.S. also fields a shorter-range, low-cost unmanned combat attack system known as LUCAS drones, based on Iran's Shahed drone design. LUCAS drones are less effective and increase the danger to ships, service members and civilians.

The United States spends nearly $1 trillion annually on its military, more than the next nine highest-spending countries combined, and accounts for 43% of global arms exports as the world's largest supplier of arms. Israel's war in Gaza and Lebanon has put additional pressure on the U.S. weapons stockpile.