“Meet ‘Castle Breaker,’ Iran’s missile wreaking havoc in US war,” USA Today, 8-31-26.  Kheibar Shekan, or “Castle Breaker,” which has a range of 900 miles and a satellite-guided, maneuverable warhead.   … the Kheibar Shekan can quickly change course in the final phase of its descent, potentially slipping past air defenses and hitting targets with devastating precision, those sources said. Mounted on mobile launchers, the solid-fuel missile is extremely difficult to detect and destroy before launch, allowing it to survive American bombardment campaigns.”  … Since 2024, Iran has stacked on incremental improvements – likely with the help of Chinese and Russian technology.  The updates include improved satellite guidance, altered launch trajectories that are harder for missile-defense radar to predict, better resistance to electronic jamming and coordinated barrages that mix ballistic missiles with swarms of drones.”