© Reuters. FILE PHOTO: The Iranian flag waves in front of the International Atomic Energy Agency (IAEA) headquarters in Vienna, Austria, March 1, 2021. REUTERS/Lisi Niesner/File Photo
By Francois Murphy, Parisa Hafezi and John Irish
VIENNA (Reuters) -World powers and Iran were locked in talks about renewing their 2015 nuclear deal on Friday, with a European source saying they were working from texts discussed five months ago, while Iranian officials said they were keeping to a tough stance from last week.
The talks on reviving the nuclear accord resumed on Thursday with the United States, as well as Israel which