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.
This is silly. If the USA could develop a nuclear weapon in about 6 years with no help from outsiders it is wrong to conclude that Iran could do it in more time with outside help.
Let’s not overlook that possessing nukes give a theocracy that thinks well of suicide bombs the means to build a doomsday device. “Attack us and everyone dies” would put Iran in a pretty strong strategic position without any need for a delivery system at all.
This is a well considered analysis that is hard to dispute. In systematically acquiring the nuclear infrastructure needed to make a bomb, Iran must be ready to defeat potential international pressure and prevent a preemptive attack. This leads to a requirement that Iran must be ready with a timely sudden “breakout” build of a handful of completed weapons. A gun type bomb is well suited to this strategy. Once Iran lets it be known that they have a weapon, any coalition against it can be broken up by selective pressure and threats.
I am convinced Iran has had a nuclear device in some form for over a year now, unlike the NORKs Iran does not want to fire one off because any nuclear device detonated is immediately analyzed and can be dissected to what the yield, efficiency and where the uranium came from.
Iran does not want to use it as a propaganda tool like North Korea, they just want to USE it against Israel or anything of a high value American target. if anything and the Iranians are very very good craftsmen are making smaller portable copies of at the least several dozen “back-pack” versions and most likely plan a coordinated attack upon America at a strategic vulnerable point where down range fallout is maximized.