The United States can confirm the destruction of only approximately one-third of Iran's ballistic missile arsenal despite weeks of intensive airstrikes targeting Iranian military facilities, according to US intelligence officials, a significantly lower figure than early assessments suggested and one that raises questions about both the effectiveness of the campaign and the resilience of Iranian defenses.
The revised estimate, shared with Reuters by three sources familiar with US intelligence assessments, stands in stark contrast to initial claims from military officials that suggested far more extensive damage to Iranian capabilities. The discrepancy highlights the inherent difficulties in conducting battle damage assessment against an adversary that has spent decades hardening and concealing its most critical military assets.
"We can confirm with high confidence the destruction of approximately 30 to 35 percent of Iran's pre-conflict ballistic missile inventory," one US defense official said, speaking on condition of anonymity to discuss classified intelligence. "That's a significant degradation, but it means roughly two-thirds of their capability remains intact."
The assessment is based on a combination of satellite imagery, signals intelligence, and damage reports from strikes conducted since the US military campaign began. American forces have conducted more than 400 sorties against Iranian targets, focusing on missile production facilities, launch sites, and command infrastructure.
For Pentagon planners, the lower-than-expected damage represents a challenge. Iran is estimated to have possessed between 3,000 and 5,000 ballistic missiles before the conflict, one of the largest arsenals in the Middle East. Even with a third destroyed, Tehran retains substantial capability to threaten US forces, regional partners, and commercial shipping.
Several factors explain why the campaign has achieved less than initially hoped. Iranian forces have proved adept at dispersing mobile launchers and relocating missiles to sites not previously identified by US intelligence. Many critical facilities were constructed underground or within hardened bunkers specifically designed to withstand aerial attack—lessons learned from decades of preparing for potential US or Israeli strikes.
"The Iranians have been planning for this scenario since 1979," said Michael Elleman, senior fellow for missile defense at the International Institute for Strategic Studies. "They've had 45 years to think about how to protect their missile force from American air power. That's a long time to dig tunnels."
US officials have also acknowledged limitations in intelligence preparation of the battlefield. While American surveillance capabilities are formidable, Iran is a large country with complex terrain, and the Islamic Revolutionary Guard Corps has operational security practices specifically designed to obscure missile locations from satellite reconnaissance.
The revised estimates have implications for ongoing military planning. President Donald Trump extended a deadline for Iran to reopen the Strait of Hormuz, suggesting negotiations may be underway. But Pentagon officials privately note that if diplomacy fails, achieving more comprehensive degradation of Iranian capabilities would require a significantly expanded campaign—one potentially involving ground operations or the use of more powerful munitions against hardened sites.
There are also questions about what constitutes meaningful success. Destroying missiles is one objective, but Iran's indigenous production capabilities mean that degraded inventory can potentially be replenished over time. US strikes have targeted production facilities, though intelligence officials say it's difficult to assess how severely those capabilities have been damaged.
"There's a difference between destroying what they have now and destroying their ability to make more," noted Fabian Hinz, a defense analyst specializing in Iranian missile programs. "The US has done some of both, but we won't know for months or years how effective the strikes on production infrastructure really were."
The battle damage assessment process itself is complex and subject to revision. Early estimates after strikes are often based on secondary explosions, fire patterns, and visible destruction—indicators that can be misleading. More detailed assessments using specialized reconnaissance platforms and intelligence from other sources can take weeks to complete.
During the 1991 Gulf War, initial US assessments suggested that air power had destroyed most of Iraq's mobile Scud missile launchers. Post-war analysis revealed the actual number destroyed was far smaller, with Iraqi forces successfully using decoys and concealment to protect real launchers. The phenomenon, known in military circles as the "Scud hunt" problem, illustrates the persistent challenge of targeting mobile missile systems from the air.
The current assessment may shift further as additional intelligence becomes available. Some US officials note that satellite imagery can show destroyed facilities but cannot always confirm whether missiles stored at those sites were also destroyed or had been moved before strikes occurred.
For regional security dynamics, the implications are significant. If roughly two-thirds of Iran's missile arsenal remains operational, Tehran retains substantial deterrent capability and the ability to escalate the conflict if it chooses. That reality complicates efforts to negotiate an end to hostilities, as neither side can credibly claim to have achieved decisive military advantage.
