Negotiators from Iran, the U.S. and the European Union resumed months-long, indirect talks over Tehran's tattered nuclear deal Thursday, as international inspectors reported that the Islamic Republic is expanding its uranium enrichment.
The resumption of the Vienna talks, suddenly called Wednesday, appeared not to include high-level representation from all the countries that were part of Iran's 2015 deal with world powers.
The negotiations come as Western officials express growing skepticism over the prospects for a deal to restore the accord.
Iran's top negotiator, Ali Bagheri Kani, met with EU mediator Enrique Mora, Iranian media reported. As in other talks, the U.S. won't directly negotiate with Iran. Instead, the two sides will speak through Mora.