Defense analysts are raising alarms over a new generation of Iranian ballistic missiles that have demonstrated an ability to evade American air defense systems. Central to this shift is the Kheibar Shekan, or “Castle Breaker,” a highly mobile, solid-fuel missile that has become a focal point of the six-month conflict between the United States and Iran.
The Kheibar Shekan features a 900-mile range and a satellite-guided, maneuverable warhead. Unlike conventional ballistic missiles that follow a predictable trajectory, this weapon can alter its course during the final phase of descent, allowing it to bypass traditional defensive measures and strike dynamic targets, such as moving military assets or critical infrastructure like jet fuel storage.
Evidence suggests these missiles have been used in significant strikes against U.S. interests. On July 17, attacks on the Muwaffaq Salti Air Base in Al-Azraq, Jordan, resulted in the deaths of three American service members. An Iranian state-run outlet confirmed on August 31 that Kheibar Shekan missiles were utilized in that operation, as well as in strikes on the King Hussein air base, targeting technical maintenance facilities and fighter-jet infrastructure.
Jonathan Hackett, a former Marine and U.S. intelligence officer, noted that existing air defense systems were designed based on outdated assumptions regarding Iranian capabilities. He described the current situation as a “live combat test” of the missile’s agility against U.S. forces, forcing a necessary, albeit difficult, re-evaluation of defensive postures in the region.
The threat extends beyond Jordan. Independent analysis of satellite imagery has indicated that Iranian strikes have caused extensive damage to the U.S. Naval Support Activity base in Bahrain, a key regional hub. Retired four-star General Barry McCaffrey, who served 32 years in the U.S. Army, has publicly argued that these missile capabilities have placed Iran in a position to potentially control access to the Persian Gulf. McCaffrey noted that while earlier versions of the missile were less effective during 2024 strikes on Israel, newer iterations have proven far more destructive.
McCaffrey also highlighted an incident where a U.S. Navy destroyer was disabled by Iranian strikes and required towing to the Philippines for repairs. He estimated that during recent exchanges, thousands of drones and missiles were launched, and while many were intercepted, the few that penetrated defenses have had potentially catastrophic impacts on U.S. assets in Qatar, Bahrain, and beyond.
Despite these developments, top administration officials, including Pentagon chief Pete Hegseth, have maintained that U.S. forces remain fully operational and capable of responding at a time and place of their choosing. Deputy Pentagon Press Secretary Joel Valdez declined to provide further details when asked for comment on the effectiveness of U.S. defenses against the Castle Breaker.
The vulnerability of U.S. bases to such technology has been a known concern for intelligence agencies for years. However, the intensity of the current conflict, which began on February 28, has accelerated the practical application of these weapons. CIA analyst Jim Lamson, who served from 1998 to 2021, explained that the missile’s guidance system is specifically engineered to adjust its trajectory during reentry, complicating interception efforts.
The Islamic Revolutionary Guard Corps (IRGC) has continued to emphasize its ability to strike critical infrastructure, claiming that its recent operations have successfully degraded the technical maintenance capabilities of U.S. facilities. As the conflict persists, the strategic implications of the Kheibar Shekan remain a primary concern for military planners tasked with protecting American personnel and equipment across the Middle East. The report also notes that exclusive: Defense experts said that Iranian missiles have significantly damaged U.S. The report also notes that bases across the Persian Gulf and left them more vulnerable than they’ve been in decades. The report also notes that and Israel, according to the Iranian government and confirmed in interviews with former U.S. The report also notes that military attack on Iran’s Larak Island. The report also notes that the solid-fuel missile is extremely difficult to detect and destroy before launch, allowing it to survive American bombardment campaigns, mounted on mobile launchers. The report also notes that and now, he said, “they’re doing something different. The report also notes that so now you have to change your defensive posture for missile defense in a way that we hadn’t been doing previously. The report also notes that ever,” said Hackett, a fluent Farsi speaker who spent two decades working on Iran-related military and intelligence issues out of six U.S.
