Iran nukes

The nuclear deal with Iran has introduced a new phrase called, “breakout time”. They are pressing for restrictions that will extend the amount of time it will take Iran to build a nuclear weapon — the so-called “breakout time” — from the current 2-3 months to a year. This brings me back to a question I have posed a number of times asking, does Iran want a nuclear bomb. Iran has been working on this project since 1979. Why have they not developed the bomb? The Manhattan Project was the name given to the United State program to make a nuke. In less than 4 years using technology from the 40’s the US made enough nuclear material for two bombs. After working on this enrichment process for 36 years without success we are now saying that they can make a bomb in 3 months. Something is missing here