Weapons-grade enrichment would "imperil" nuclear talks, diplomats warn Iran

What they are saying: “You cannot enrich to weapons-grade level and say that you are seeking a return to an agreement whose goal is to ensure the exclusively peaceful nature of Iran’s nuclear program," one of the European diplomats told reporters.

Driving the news: The second day of the nuclear talks in Vienna focused on the sanctions relief sought by Iran. The Iranian negotiations team held separate meetings with the different delegations and indirect talks with the U.S. team, through EU mediators.

What’s next: The European diplomats said they are still waiting for a clear statement from the Iranian team that it is ready to pick up the negotiations where the previous Iranian regime left them in June, rather than renegotiating everything.

• The diplomats said they don’t want to put forward artificial deadlines but stressed that if Iran doesn’t show it is seriously negotiating by the end of this week, “it will be a problem."