RT The Hormuz Letter (@HormuzLetter)NEW: Iran has transferred 15 unexploded US missiles and bombs to "technical and research units" for reverse engineering, including a fully intact GBU-57 bunker buster that failed to detonate during strikes on Iran's nuclear sites.Iran captured a single US RQ-170 stealth drone in 2011 and built an entire fleet of combat drones from it. It now has 15 American weapons to study. ...