WASHINGTON, Muharram 16, 1436, Nov 9, 2014, SPA -- U.S. President Barack Obama said there was still a big gap between Iran and Western powers on an agreement to ensure Tehran cannot produce a nuclear weapon and he said a deal could be out of reach, Reuters reported. Economic sanctions led by the United States have pushed Iran to the table for an agreement on its nuclear weapons program, Obama said in an interview broadcast Sunday on CBS "Face the Nation" program. A final step would involve Iran providing "verifiable, lock tight assurances that they can't develop a nuclear weapon," Obama said. "There's still a big gap," he told CBS. "We may not be able to get there." -- SPA 21:08 LOCAL TIME 18:08 GMT www.spa.gov.sa/1293142