CNN —Momentum appears to be building to revive negotiations around Iran’s growing nuclear program. Talks between Iran and the European Union on Wednesday focused on key sticking points, including nuclear enrichment levels and Iranian cooperation with the International Atomic Energy Agency, one diplomatic source briefed on the matter told CNN. “The current environment has been positive for de-escalation,” said the source, who requested anonymity citing longstanding norms around regional government communications with the media. Both Qatar and Oman have played mediating roles between Iran and Western powers in the past. Iran had demanded that South Korea release $7 billion in funds frozen in South Korean banks under US sanctions.

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Persons: Enrique Mora, Ali Bagheri, ”, Mora, Kani, –, Hossein Amir, Abdollahian, “, Biden, Brett McGurk, Siamak, Emad Sharghi, Morad, Shahab Dalili, Matthew Miller, Trump Organizations: CNN, European Union, International Atomic Energy Agency, Twitter, EU, –, Iran’s, South, Oman “, IAEA Locations: Iran, Doha, Iranian, Tehran, United States, – France, Germany, United Kingdom, Oman, Qatar, American, South Korea, Korean, Iraq