Negotiations between Iran and the United States over Tehran's rapidly advancing nuclear program will return on Saturday to the secluded sultanate of Oman, where experts on both sides will start hammering out the technical details of a possible deal.

Negotiations between Iran and the United States over Tehran’s rapidly advancing nuclear program will return Saturday to the secluded sultanate of Oman

Iran and the United States held their first technical-level talks on Tehran’s rapidly advancing nuclear program Saturday, a more complex phase of their high-stakes negotiations. “The negotiations this round were much more serious than in the past,