Iran : There is the ` ` possibility of a phased withdrawal '' Two senior State Department officials say they will go to Tehran . ` ` It is possible to reach an understanding '' before Friday night , Javad Zarif says . European Union spokesman : The United States and its partners have accused Iran of diverting resources from its civilian nuclear program to try to develop a nuclear bomb . Uranium enrichment is the subject of negotiations with Iran .
Iran : There is the ` ` possibility of a phased withdrawal '' Two senior State Department officials say they will go to Tehran . ` ` It is possible to reach an understanding '' before Friday night , Javad Zarif says . European Union spokesman : Uranium enrichment is the subject of negotiations with Iran .