Is US Running Out of Air Defence Missiles? Patriot and THAAD Stockpiles Hit by Iran War, Says Official

The United States' stockpiles of key air defense missiles have reportedly fallen sharply following its military campaign against Iran, raising fresh questions about the country's readiness for any prolonged conflict. A new analysis by the Center for Strategic and International Studies (CSIS) estimates that inventories of Patriot interceptors have declined by nearly two-thirds, while the stock of THAAD missile interceptors has been reduced by about half.

The findings come as US President Donald Trump weighs the possibility of renewed military action against Iran, ABC News reported. Although the administration has maintained that the US retains sufficient military capability, officials and defense analysts say dwindling inventories of advanced missile systems could become an important factor in future operational planning. World War 3 Fears: Vladimir Putin May Send Armed Groups To Occupy NATO Territory Within Weeks, US Intelligence Warns.

Report Highlights Declining Missile Stockpiles

According to the CSIS analysis, the US began the conflict with an estimated 452 THAAD interceptors, around half of which have reportedly been used. A US official, speaking to ABC News on condition of anonymity, declined to discuss exact figures but said inventories of both Patriot and THAAD interceptors are now "extremely low."

The official also expressed concern over limited supplies of long-range offensive weapons, including the Army Tactical Missile System (ATACMS) and the Precision Strike Missile (PrSM), both of which have played important roles in long-range operations. US Launches Strikes on Iranian Targets a Day After It Foiled Missile Attack on American Forces.

Trump Says Some Munitions Remain Available

Speaking on Thursday, President Donald Trump acknowledged pressure on certain weapons inventories while insisting that production is continuing. "We need more all the time," Trump said. He added: "We have certain types of munitions that are very powerful [of which] we have unlimited, virtually unlimited supply."

"We have others where it's a little bit tighter, and we're getting them in on a daily basis." The president did not specify which weapons he was referring to. Analysts note that some advanced missile interceptors cost around USD 4 million each and may require up to two years to manufacture, limiting how quickly inventories can be replenished.

Military Planning Could Be Affected

Retired military officers told ABC News that munitions availability is expected to influence Pentagon planning if the conflict with Iran escalates. Retired Vice Adm. Kevin Donegan, former commander of the US Navy's Fifth Fleet, said inventories are always part of military planning. "Munitions are certainly going to be in the calculus of decision-makers."

He added that the US military has adapted effectively through layered air-defense strategies but acknowledged that the conflict offers important lessons about maintaining sufficient stockpiles.

Retired Marine Corps Col. Mark Cancian, who authored the CSIS report, said reduced inventories may have contributed to the decision to pause parts of the air campaign.

According to Cancian, rebuilding advanced missile inventories is a long-term process that depends on congressional funding, defense contracts and manufacturing capacity.

Defense analysts also say the decline in missile inventories has implications beyond the Middle East. Cancian described it as creating a potential "China problem," arguing that reduced stockpiles could affect US preparedness in the event of a future conflict in the Indo-Pacific.

While experts believe the United States retains the capability to respond militarily if required, they say replenishing inventories will remain a strategic priority over the coming years.

Analysts say the conflict has renewed attention on the US defense industrial base and its ability to sustain prolonged military operations. Donegan argued that defense manufacturing should be capable of supporting wartime requirements rather than remaining geared primarily toward peacetime demand.

Experts also noted that military procurement has traditionally prioritized long-term platforms such as aircraft and ships over stockpiling munitions, despite missiles playing a critical role in modern conflicts.

According to analysts, recent operational decisions have increasingly balanced mission objectives against the need to conserve high-value interceptors and long-range missiles, a consideration likely to remain central if hostilities resume.

(The above story first appeared on LatestLY on Aug 07, 2026 07:39 PM IST. For more news and updates on politics, world, sports, entertainment and lifestyle, log on to our website latestly.com).