The United States military has significantly drawn down its stockpile of advanced missile-defense interceptors after expending far more high-end munitions defending Israel than Israeli forces used themselves during hostilities with Iran, according to Defense Department assessments described to The Washington Post. The imbalance, outlined by multiple U.S. officials speaking on condition of anonymity, highlights the extent to which Washington has absorbed the bulk of the missile defense burden under coordinated operations with Israel, while raising urgent questions about long-term U.S. readiness in other global conflict zones.
According to the data, the U.S. military fired more than 200 Terminal High Altitude Area Defense, or THAAD, interceptors during the conflict—roughly half of the Pentagon’s total inventory at the time. In addition, American forces launched over 100 Standard Missile-3 and Standard Missile-6 interceptors from naval vessels deployed in the eastern Mediterranean. Israeli forces, by contrast, reportedly used fewer than 100 Arrow interceptors and around 90 David’s Sling interceptors to counter incoming threats, including projectiles launched by Iran-backed groups operating from Yemen and Lebanon. The disparity has prompted growing concern within defense circles about the sustainability of current missile defense commitments.
Military analysts say the figures offer a rare and detailed look into how the United States and Israel coordinate layered air defense systems during high-intensity conflict. Kelly Grieco, a senior fellow at the Stimson Center, described the scale of U.S. involvement as striking, noting that American forces absorbed most of the missile defense workload while Israel conserved its own stockpiles. Grieco warned that even if operational decisions were strategically justified, the United States is now left with a sharply reduced THAAD inventory and a production pipeline that cannot easily replenish depleted supplies.
The strain on U.S. missile defense resources is already reverberating beyond the Middle East. Allies in Asia, particularly Japan and South Korea, are closely monitoring the situation, given their reliance on American systems as a deterrent against potential threats from North Korea and China. Analysts warn that heavy expenditure in one theater could weaken deterrence elsewhere, creating what Grieco described as a delayed “bill coming due” in regions far removed from the Middle East conflict.
U.S. officials acknowledged that the imbalance reflects the intensity of coordinated operations during what has been described as Operation Epic Fury. One administration official said American forces fired roughly 120 more interceptors than Israel and engaged twice as many incoming Iranian missiles. The same officials indicated that the burden could grow even heavier if hostilities resume, particularly after reports that some Israeli missile defense batteries were taken offline for maintenance. Such a development, they warned, would likely force greater reliance on U.S. systems in any renewed escalation.
In response to concerns over depleted inventories, the Pentagon defended its operational approach, emphasizing that ballistic missile interceptors are only one component of a broader, integrated defense network. Pentagon spokesman Sean Parnell said that both countries shared the defensive burden and used a wide range of systems—including fighter aircraft and counter-drone technologies—to maximize effectiveness against Iranian missile threats. The Israeli government similarly stressed that cooperation between the two allies had been close and strategically aligned, arguing that no partner matches Israel’s capabilities or shared operational readiness.
Despite these assurances, internal assessments suggest a more uneven reality behind the coordinated messaging. The Washington Post reported that Israeli Prime Minister Benjamin Netanyahu played a central role in encouraging a hardline approach toward Iran, with early war objectives including the weakening of Tehran’s nuclear capabilities and the possibility of regime change. However, as the conflict dragged on, both sides faced mounting operational and economic strain. Iran’s reported closure of the Strait of Hormuz disrupted global energy markets and contributed to rising inflation, while U.S. intelligence estimates suggest that Tehran still retains a majority of its missile stockpiles despite sustained strikes.
Tensions between Washington and Jerusalem have reportedly increased as the war has become more protracted than initially anticipated. A recent call between President Donald Trump and Netanyahu reflected growing disagreements over strategy, with U.S. officials expressing concern about the strain continued fighting would place on already depleted missile defense inventories. One senior official noted that Israel’s ability to sustain high-intensity operations has been tested by simultaneous engagements in Gaza, Lebanon, and against Houthi forces in Yemen, raising questions about long-term operational endurance.
The strategic framework guiding missile defense coordination between the two allies was designed to maximize protection of Israeli territory while leveraging U.S. high-end interceptors for the most advanced threats. Lower-tier systems such as Iron Dome and David’s Sling are typically used by Israel to intercept shorter-range projectiles, allowing more sophisticated interceptors like THAAD and ship-based missiles to focus on ballistic threats. However, officials acknowledged that this arrangement resulted in a significant drawdown of U.S. stockpiles during the recent escalation.
Defense analysts say the situation exposes a structural vulnerability in U.S. military planning: the mismatch between global commitments and production capacity for advanced interceptors. Justin Logan of the Cato Institute criticized the imbalance as inconsistent with an “America First” posture, arguing that U.S. resources are being stretched to support allied defense needs while domestic readiness gaps remain unresolved. He pointed to prior Pentagon disclosures suggesting that even baseline Patriot missile inventories were well below required levels for full operational planning.
As the conflict continues to evolve, the question of whether the United States can sustain such levels of missile defense support remains unresolved. While officials insist that stockpiles remain sufficient for current contingencies, the rapid depletion of high-end interceptors has raised concerns about preparedness in a potential multi-theater conflict scenario involving adversaries such as Iran, North Korea, or China. For now, the episode underscores a growing reality in modern warfare: the United States remains the central pillar of allied missile defense, but that role comes at an increasing strategic and material cost.
