US munitions stockpiles strained after Iran conflict, officials say
U.S. defense officials acknowledge significant depletion of missile inventories following the Iran war, prompting calls for increased production and additional funding.
Washington officials say the intensive 40-day campaign against Iran has markedly reduced U.S. missile inventories, raising concerns about the ability to sustain future operations. At a recent defense summit in Pennsylvania, President Donald Trump urged defense firms to accelerate production, while Pentagon spokesperson Pete Hegseth described the effort as a way to bolster the nation’s “arsenal of freedom.”
The White House reported that U.S. forces struck more than 13,000 Iranian targets and intercepted over 1,700 drones and missiles before a cease-fire took effect on April 8. A New York Times report noted that advisers warned further escalation would deplete stockpiles even more. Trump later told the Wall Street Journal that the United States has “far more munitions than anyone in the world.”
However, Hegseth told the Senate Appropriations Committee that the Pentagon needs an additional $87 billion to address “critical shortfalls.” Data from the Center for Strategic and International Studies (CSIS) suggest that more than 1,000 Tomahawk Land Attack Missiles and roughly 1,430 Patriot interceptors have been used, with replenishment timelines of three to five years per missile. CSIS estimates the Tomahawk stockpile may not return to pre-war levels until 2031, while Patriot and THAAD inventories have also been heavily drawn down.
“It takes several years to produce a missile. If you put money into the system today, you wouldn’t get a missile for three or four years. Sometimes even five,” said Mark Cancian, a retired Marine colonel and senior adviser at CSIS.
Analysts warn that the depletion creates a “window of vulnerability” for the United States, especially as attention shifts to potential conflicts in the Indo-Pacific and the prospect of a Chinese invasion of Taiwan. Former CIA adviser Jacob Olidort argued that the use of these weapons also serves a deterrent purpose, sending a signal to adversaries about U.S. willingness to act.
European allies have expressed concern over the strain on shared defense resources. Ukrainian President Volodymyr Zelensky cited the Iran war as a factor depleting U.S. Patriot systems needed to counter Russian attacks. The White House, however, maintains that the United States retains sufficient munitions to meet its strategic objectives.
“The United States military has more than enough munitions, ammo, and stockpiles to serve all of President Trump's strategic goals and beyond,” White House spokesperson Anna Kelly said.
While the immediate focus remains on the Middle East, officials acknowledge that production capacity must be expanded to avoid longer-term shortfalls as the United States confronts multiple global security challenges.