What is Iran’s Castle Breaker missile, used against US bases?

The Kheibar Shekan missile, also known as Castle Breaker, has been used by Iran to strike US military targets in Jordan this week. This medium-range ballistic missile, developed by the Islamic Revolutionary Guard Corps, has a range of approximately 1,450 km and a payload capacity of 449 to 590 kg. Tensions between the US and Iran have escalated following US strikes on rocket launchers in Iran, prompting retaliatory actions from Tehran.