Reaching and maintaining speeds of Mach 15 (15 times the speed of sound) while also steering at high altitudes is extremely difficult. It requires advanced materials, heat protection, and precise control systems ... challenges even the most advanced countries have trouble solving. For Iran to go from its current missiles (which top out around Mach 10–12) to a dependable Mach 15 missile that can change direction on reentry sounds like a huge stretch of imagination. 🤷🏻‍♂️