Iranian and U.S. negotiators resumed talks on Friday in Rome to resolve a decades-long dispute over Iran's nuclear ambitions, Iranian media reported, despite Tehran warning that clinching a new deal might be insurmountable amid mutually exclusive demands.

This edition of the Farda Briefing looks at how Tehran and Washington are digging in on the core nuclear issue: enrichment. The United States insists Iran can’t enrich uranium; Iran maintains it won’t give it up.