Iran accused the United States on Monday of procrastinating in efforts to revive Tehran's 2015 nuclear deal - a charge denied by Washington, which said a deal was closer than two weeks ago because of apparent Iranian flexibility.
After 16 months of fitful, indirect American-Iranian talks, with European Union officials shuttling between the sides, a senior EU official said on Aug. 8 it had laid down a final offer and expected a response within a "very, very few weeks".
