Via WSJ:
The mood among international negotiators taking part in protracted talks over Iran’s nuclear program, which has swung from positive to starkly negative in recent days, began to improve again on Friday as officials said they would continue discussions over the weekend.
To allow more time to reach an accord, the European Union and the U.S. said Friday they were extending the terms of a 2013 interim nuclear deal with Iran to Monday night. The British and French foreign ministers, who left the nuclear talks on Friday, said they would return on Saturday to try to push through a final agreement.