Negotiators at talks to revive the Iran nuclear deal in Vienna have still not come to an agreement on the trickiest issues, the French Foreign Ministry has said, warning that time to reach a deal is running out.

“Brave decisions need to be taken quickly because time is not on anyone’s side,” ministry spokesperson Agnes von der Muhll said in a media briefing on Wednesday.

“The negotiations become more difficult as they focus on the more difficult issues and significant disagreements persist,” she said.

For more than two months the US and Iran have been holding indirect negotiations to resurrect the 2015 deal through which Western nations sought to stop Tehran pursuing nuclear weapons.

The Iranian government has repeatedly denied having any such aim. (RT)