Iran is only SUSPECTED of having a nuclear weapons program. Thus far nothing has shown this to correct. The suspicions came from the same idiotic regime who gave us that olde "WMDsWMDsWMDs in Eyeraaaak" - " be afraid!!" conspiracy theory. Fooled you once. Fool you twice and I guess .....well.......you're a fool.
U.S. asks Uzbekistan to join anti-ISIS coalition (Reuters)
from the article: U.S.: Six world powers accept Iran's offer to hold talks