US Military Faces Critical Ammunition Shortages Amid Iran Conflict, Raising Concerns Over Future China and North Korea Readiness

The US military is experiencing a severe depletion of ammunition stocks due to ongoing conflict with Iran, with inventories of key weapons systems reduced by approximately 50 percent. Experts warn that if the ceasefire collapses and fighting resumes at previous intensities, the shortage could worsen significantly, potentially undermining US readiness for future conflicts with China or North Korea.

According to analyses from the Center for Strategic and International Studies (CSIS), by the end of the full-scale conflict with Iran in April, the Pentagon had expended at least half of its THAAD missile interceptors, nearly half of its Patriot missile interceptors, and about 30 percent of its Tomahawk ground-attack missiles. Although the ceasefire has temporarily reduced missile usage, replenishment is slow, with current production rates reflecting peacetime levels, only about 15 Tomahawks and 20 Patriots are produced monthly, and no new THAAD interceptors are expected in 2026.

Restoring ammunition stocks to pre-conflict levels is projected to take three years or more, with some estimates ranging from two to five years. Funding remains a critical issue, as Congress has yet to allocate any additional resources specifically for missile replacement, and the Pentagon’s $88 billion supplemental request faces legislative hurdles. President Trump invoked the Defense Production Act in June to accelerate missile manufacturing and signed agreements to expand production lines, but experts caution that scaling up industrial capacity will require significant time.

To alleviate pressure on US production, the administration has begun licensing allied countries, such as Ukraine, to manufacture Patriot missiles independently, though this process is lengthy; for example, Japan took three years to establish its Patriot missile production. Meanwhile, stocks of other missile types like the Precision Strike Missile and Joint Air-to-Surface Standoff Missile are expected to recover faster, potentially by late 2027.

Despite these challenges, Pentagon spokesperson Sean Spicer stated that the US military maintains sufficient capabilities to fulfill its missions globally. However, analysts emphasize that the ammunition shortage introduces strategic risks, especially regarding deterrence credibility against China and North Korea, where large missile inventories are essential for both offensive and defensive operations. The evolving situation underscores the complex interplay between military readiness and political decisions amid ongoing regional conflicts.