U.S. and Iran nuclear talks are making "very good progress," U.S. official says

The United States and Iran held a second round of negotiations on Saturday in Rome over Tehran's rapidly advancing nuclear program, officials said.

U.S. Middle East envoy and billionaire Steve Witkoff met with Iranian Foreign Minister Abbas Araghchi at the Omani Embassy in Rome's Camilluccia neighborhood. The negotiations were mediated by Omani Foreign Minister Badr al-Busaidi.

"Today, in Rome over four hours in our second round of talks, we made very good progress in our direct and indirect discussions," a U.S. official told CBS News. "We agreed to meet again next week and are grateful to our Omani partners for facilitating these talks and to our Italian partners for hosting us today."