
VIENNA- Iran, the United States and other world  powers are all but certain to miss Monday's deadline for negotiations to  resolve a 12-year stand-off over Tehran's atomic ambitions, forcing  them to seek an extension, sources said on Sunday, confirming that a  final deal is still far off.
"Considering the short time left  until the deadline and number of issues that needed to be discussed and  resolved, it is impossible to reach a final and comprehensive deal by  Nov. 24," Iran's ISNA news agency quoted an unidentified member of the  country's negotiating team in Vienna as saying.
A European source  said on Saturday there was no decision yet on extending the talks:  "It's the ministers' decision, but talks on an extension could begin  Sunday or Monday," he said, adding that a rollover could run for several  months.