Trump administration and Democrats at odds over risk to US weapons stockpiles from Iran war

U.S. military officials have moved to reassure Americans about weapons stockpiles amid escalating strikes against Iran, though defense experts and lawmakers are raising concerns about long-term readiness as the conflict intensifies.

The U.S. and Israeli military campaign against Iran has now entered its second week, with President Donald Trump announcing Friday that several defense contractors had agreed to “quadruple production of weapons as rapidly as possible.” Lockheed Martin confirmed the commitment on social media, though neither provided specifics on timelines or which weapons systems would see increased production.

Pentagon spokesman Sean Parnell maintained a confident stance, stating that U.S. forces “have everything they need to execute any mission at the time and place of the President’s choosing and on any timeline.”

Defense analysts, however, point to missile defense systems as particularly strained resources. The Terminal High Altitude Area Defense (THAAD) and Patriot systems have been in high demand across multiple theaters, including Ukraine and Israel, even before the current conflict.

“I’m not particularly worried about us actually running out during this conflict,” said Ryan Brobst of the Foundation for Defense of Democracies. “It’s about deterring China and Russia the day after this conflict is over.”

Brobst, who serves as deputy director of the Center on Military and Political Power at the hawkish Washington think tank, estimates that approximately 25% of the entire THAAD stockpile was depleted defending Israel from Iranian ballistic missiles during the 12-day conflict with Iran last summer. The exact numbers of these defensive systems remain classified.

U.S. forces are also contending with waves of Iranian drones, which have proven challenging to intercept. In response, the military is deploying the Merops anti-drone system, which has demonstrated effectiveness against Russian drones in Ukraine. The system offers a cost-effective alternative to firing expensive missiles at relatively inexpensive drones – a financial calculus that increasingly matters as the conflict continues.

Democratic lawmakers have voiced particular concern about the depletion of interceptors and other munitions. Senator Richard Blumenthal (D-Conn.) pointed to the apparent contradiction in U.S. policy: “We’ve been told again and again and again one reason that we can’t provide interceptors for the Patriot system or other munitions for Ukraine is that they’re in short supply.”

Senator Mark Warner (D-Va.), the top Democrat on the Senate Intelligence Committee, was blunt in his assessment: “Our munitions are low. That’s public knowledge. It will require additional funding, funding where we have other domestic needs as well.”

The shortage reflects a long-standing production problem that predates the current conflict. Defense contractors typically don’t expand production capacity without guaranteed orders, creating bottlenecks when demand suddenly increases during conflicts.

“Successive administrations over multiple decades did not procure sufficient quantities of these interceptors, and when that happens, companies don’t have an incentive to expand their production capacity,” Brobst explained. “It takes significant time to ramp up production.”

The situation may be improving on the battlefield. General Dan Caine, chairman of the Joint Chiefs of Staff, told reporters that Iranian ballistic missile launches have decreased by 86% since the war’s first day. Defense Secretary Pete Hegseth noted that U.S. forces have shifted from using specialized “standoff munitions” to more conventional “500-pound, 1,000-pound and 2,000-pound GPS- and laser-guided, precision gravity bombs,” which are more plentiful in U.S. arsenals.

Katherine Thompson, a former Pentagon deputy senior adviser during the Trump administration who now works at the libertarian Cato Institute, criticized the previous Biden administration for diminishing stockpiles by transferring interceptors to Ukraine. “It was a short-term win for the Biden administration but a long-term strategic problem for the United States as a whole,” she said.

Riki Ellison, chairman of the Missile Defense Advocacy Alliance, offered a more optimistic perspective, noting that the U.S. military could relocate interceptors from different global regions or request them from allies if necessary. He also expressed confidence in Pentagon initiatives to boost production.

“We’re moving in that direction,” Ellison said of increased manufacturing capacity. “That’s not going to be ready next week or anything, but it’s moving.”

As the conflict continues, the debate over America’s defense industrial capacity and stockpile management is likely to intensify, particularly as strategic concerns about potential confrontations with other global powers remain at the forefront of military planning.