The heavily guarded mysterious Fordow bunker is built into the side of a mountain near the city of Qom, around 60 miles of Tehran. It was first made public in 2009, according to officials

MOP s were developed by America’s air force when it found that its existing bunker-busters could not damage Iraqi bunkers during the invasion in 2003. A new weapon had to be rushed into service. The MOP aimed to smash even deeper and harder bunkers being built in Iran and North Korea.