the mushroom cloud. This sequence of devices has been assembled and tested. Iran has some 500 exploding bridgewires.
Fourth, the warhead must be delivered. The Shabab-3 missile nosecone is large enough to accommodate the warhead. The outer radius of the R265 shock generator-encased warhead is 550 millimeters, less than the estimated payload chamber diameter of about 600 millimeters. Most of all, the Iranian military has selected the Shabab-3 not only because it possesses a range of 1200 kilometers, but because it can be detonated in an airburst some 600 meters off the ground on re-entry. The height of 600 meters was used in the Nagasaki explosion. Such a weapon cannot be crashed into the ground. It must be detonated while still airborne. Iran has a small fleet of Shahab-3 missiles.
Hence, Iran’s metronomic accretion of nuclear material is not just an ambiguous physics undertaking that should worry the West. It is part and parcel of a nuclear attack plan that the international community is determined to address.