FILE – In this Sept. 26, 2013 file photo, seated at the table from left, U.S. Secretary of State John Kerry, Iranian Foreign Minister Mohammad Javad Zarif and European Union foreign policy chief Catherine Ashton attend a meeting of the five permanent members of the Security Council plus Germany during the 68th session of the United Nations General Assembly at U.N. headquarters. Iran’s foreign minister fired back on Wednesday, Oct. 9, 2013 against hard-line critics of Tehran’s groundbreaking outreach to the United States, accusing opponents of using fabricated news leaks and other tactics in attempts to undermine the effort. Zarif said on his Facebook page Tuesday, that the political battles had become so tense that it brought on back pain and spasms, causing him to cancel appointments and go to hospital for a check-up. (AP Photo/Jason DeCrow, File)