Iranian nukes

With the news being dominated by ISIS most people have forgotten about the Iranian nuclear program. In 2006 negotiations between Iran and Europe broke down over a disagreement on the number of centrifuges Iran could have. Iran had 500 they were using for research and wanted to increase that to 3,000 and the Europeans disagreed. Presently Iran is negotiating with the United States and they have 19,000 centrifuges of which 9,000 are active and they want to increase to 190,000. It is obvious who is winning in these negotiations. Many are worried about this but as I have stated in the past I am not. I don’t believe that Iran really wants a nuclear bomb but they just want to stir the pot to keep the price of oil up. I say this because back in 1944 the US using far less sophisticated procedures created enough U-235 to make a bomb in a couple of years. Iran has been working at this for 20 years and still don’t have enough enriched U-235 to make a bomb. Maybe I am just an optimist but what other explanation is there?