WASHINGTON -- US President Barack Obama cast doubt on whether negotiators in Vienna will succeed in clinching a comprehensive agreement with Iran over its nuclear program in a television interview aired on Sunday.
Praising Iran's performance under the eight-month old interim agreement, the Joint Plan of Action, which froze the crisis between Iran and world powers, Obama said the US seeks a "verifiable," lock-tight" deal that makes sure "they don't get a nuclear weapon."
US Secretary of State John Kerry met with Iranian Foreign Minister Mohammad Javad Zarif in Muscat, Oman for those negotiations on Sunday, working toward a deadline terminating talks on November 24.
"We've now had significant negotiations," Obama said. "The question now is whether we're going to be able to close this final gap."