Iran war heats up while US weapon stocks remain depleted, risking military’s ability to fight future wars

U.S. Military Faces Long-Term Vulnerability as Iran Conflict Drains Critical Munitions

Iran war heats up while US weapon – President Donald Trump’s declaration that the truce with Iran is officially concluded comes at a precarious moment for American defense capabilities. According to multiple experts consulted by CNN, the nation’s critical weapons reserves are already running dangerously low and face even greater strain if aerial operations persist at their current pace. This depletion could fundamentally alter how the United States prepares for potential conflicts across the Indo-Pacific region, including scenarios involving China or North Korea.

Operation Epic Fury Takes a Heavy Toll

The initial stage of hostilities, known as Operation Epic Fury, witnessed the American armed forces deploy thousands of essential missiles. These ordnance served dual purposes: executing precision strikes against distant targets and providing layered defense against incoming enemy projectiles. Analysts reviewing CNN’s earlier coverage note that the volume of expenditure has been substantial.

“If the war continues at the rate it’s been going for the last [five] days … it would reduce stockpiles enough that there would be a new, higher level of risk … with the Indo-Pacific,” said Mark Cancian, a retired Marine Corps colonel and defense analyst at the Center for Strategic and CSIS think tank.

Michael O’Hanlon, who directs foreign policy research at the Brookings Institution, expressed certainty that current inventory levels fall short of optimal requirements. “There’s no doubt” that stockpiles are “lower than we would prefer,” he stated, emphasizing the urgency of addressing this shortfall before additional commitments arise.

Numbers Tell a Story of Depletion

By the time comprehensive combat operations between Washington and Tehran concluded in April, Pentagon assessments revealed significant losses across multiple categories. The military had launched at least half of its THAAD ballistic missile interceptors, consumed nearly half of its Patriot air defense systems, and expended approximately thirty percent of its Tomahawk land-attack missiles. CNN verified these figures through three sources with access to internal Defense Department records.

The subsequent ceasefire provided temporary relief. Low-intensity retaliatory exchanges during those months demanded considerably fewer munitions than full-scale warfare. However, the pace of replenishment remains sluggish. Cancian pointed out that current fiscal year projections show the Pentagon acquiring roughly fifteen new Tomahawks and twenty Patriot missiles each month. Notably, no THAAD deliveries are scheduled for 2026.

“The timeline for replenishment of munitions for the most part will be measured in years — two-to-five for most,” Elaine McCusker, an American Enterprise Institute senior fellow who previously served as the Pentagon’s deputy and acting comptroller, told CNN.

Funding Gaps and Production Challenges

John Ferrari, a retired Army two-star general and defense acquisition expert at the American Enterprise Institute, highlighted a critical financial gap. “Not a single dollar has been appropriated by the Congress to replace a single missile” since hostilities commenced, he explained, leaving the Pentagon reliant on “the normal, slow yearly peacetime process.”

While the White House recently submitted a supplemental funding request to cover Iran-related expenses alongside certain unrelated initiatives, legislative approval appears uncertain. Meanwhile, the Pentagon has signaled its commitment to accelerating the defense industrial base. Trump utilized the Defense Production Act in June to cut through regulatory obstacles and hasten missile manufacturing, with the Defense Department securing agreements with producers to widen their output capacity.

“The Department is aggressively pursuing and integrating the best of American innovation, wherever it resides, to deliver production at scale and drive resiliency across supply chains,” said the Pentagon official.

Cancian acknowledged that invoking the Defense Production Act provides some benefit, though he cautioned that “the impact will be small.” Building new capacity requires patience. Licensing arrangements enabling nations like Germany and Ukraine to manufacture Patriot interceptors domestically offer potential relief amid growing worldwide demand.

Global Partnerships and Recovery Timelines

Trump revealed the Ukraine licensing agreement on Thursday during remarks at the NATO summit in Turkey. Nevertheless, these partnerships develop gradually. Japan required three years to construct its Patriot manufacturing facility, while Germany has yet to produce a single interceptor despite commencing construction on its production line in 2022.

CSIS analysis indicates that certain missile categories will recover more swiftly. Inventories for the Precision Strike Missile and the Joint Air-to-Surface Standoff Missile should return to pre-conflict levels by mid-to-late 2027. However, Cancian warned that Chinese confrontation represents only one of several threats. Should the Pentagon continue consuming critical munitions at elevated rates, North Korean scenarios could also expose serious vulnerabilities in American military readiness.