FILE - In this April 5, 2013 file picture EU foreign policy chief Catherine Ashton, left, smiles, as Secretary of Iran’s Supreme National Security Council Saeed Jalili walks away, after

 

              FILE - In this April 5, 2013 file picture EU foreign policy chief Catherine Ashton, left, smiles, as Secretary of Iran’s Supreme National Security Council Saeed Jalili walks away, after
FILE - In this April 5, 2013 file picture EU foreign policy chief Catherine Ashton, left, smiles, as Secretary of Iran’s Supreme National Security Council Saeed Jalili walks away, after a photo call at a start of high-level talks between world powers and Iranian officials in Almaty, Kazakhstan. Technicians upgrading Iran’s main uranium enrichment facility have tripled partial or full installations of high-tech machines that could be used in a nuclear weapons program to more than 600 since starting their work three months ago, according to diplomats who demanded anonymity because they said they are not authorized to disclose the information, Wednesday April 17, 2013. (AP Photo/Shamil Zhumatov, Pool)