Prolonged Iran War Weakens US Deterrence, Handing Advantage to Russia and China

Military analysts warn that a drawn-out conflict with Iran is shifting the global balance of power, as the severe drain on U.S. weapons stockpiles directly enhances the strategic positioning of Moscow and Beijing.

The rapid consumption of critical munitions in the Middle East has forced Washington to reallocate specialized assets from Asia and Europe, resulting in a significant erosion of American firepower in those regions.

According to analysts tracking defense inventories who talked to The New York Times, the scale of ammunition consumption represents a severe reduction in conventional deterrence that will take years to reconstitute.

This dynamic provides Russian and Chinese leadership with a visible window of vulnerability to factor into their own strategic calculations.

Depleted Inventories and Delayed Deliveries

Bombing operations and air-defense actions in the Middle East have consumed thousands of advanced, high-cost missiles that rely on complex global supply chains.

The strain on interceptor inventories has led the U.S. to delay planned missile shipments to partners in Europe and Asia.

"It’s impossible for that not to have a significant effect on the decision calculus of Russia and China," said Tom Karako, a senior fellow at the Center for Strategic and International Studies.

"They may do something quite deliberate and at the time of their choosing, because keep in mind, we’re going to take years to reconstitute."

White House and defense officials maintain that overall military readiness remains sufficient for any ordered operations, pointing to expanded output among defense contractors.

However, estimates indicate that replacing the more than 1,500 Patriot interceptor missiles used in the campaign could require upwards of two years, with current national inventories standing at fewer than 1,700 units.

Cascading Global Impacts

The diversion of naval vessels, aircraft, and air-defense infrastructure to the Middle East has disrupted defense posture elsewhere.

In Asia, assets have been redirected from Indo-Pacific Command, including critical long-range missiles and tactical surveillance equipment, potentially affecting security dynamics on the Korean Peninsula and in the Taiwan Strait.

The shift is also impacting European security architecture. Ukrainian officials report a threefold decrease in Western-supplied air-defense missiles this year compared to 2025, contributing to recent failures to intercept Russian missile strikes.

"The longer this war runs and the more we continue to exchange fire with Iran, the worse the munitions problem becomes for the United States, and the larger and more visible this window of vulnerability becomes," said Todd Harrison, a defense analyst at the American Enterprise Institute.

Long-Term Deterrence Shift

Intelligence assessments indicate that both Moscow and Beijing are closely monitoring American stockpile levels via public budget data, contractor disclosures, and satellite surveillance.

With the U.S. defense procurement process facing structural delays, analysts emphasize that a protracted conflict in the Middle East inherently benefits rival powers by stretching American military capacity across multiple theaters simultaneously.