[wolfcreek]

One would be remiss to dismiss the fact Iran is already a nuclear power.

All this speculation is just another way to stall the inevitable.

[RayChuang88]

If I remember correctly, Little Boy, the U-235 "gunbarrel" bomb, weighed 8,900 lbs. and had a yield of around 15 kT of TNT.

If the Iranians build an "gunbarrel" device like Little Boy but with more modern materials, they could build a 10 kT device weighing about 3,000 lbs., which makes it possible to carry it on the F-4 fighters they still possess or the Su-24 Fencer fighter-bomber. However, it also means the Iranian missiles won't be able to lift such a heavy warhead for long ranges unless they use their biggest missile.