Iran and the United States made “some but not conclusive progress” Friday in a fifth round of negotiations in Rome over Tehran's rapidly advancing nuclear program, the talks' Omani mediator said. The remarks by Badr al-Busaidi suggested the negotiations between the two longtime enemies would continue even as the talks run up against their toughest challenge: Trying to find middle ground between American demands that Iran stop enriching

Iran and the United States will hold talks Friday in Rome, their fifth round of negotiations over Tehran’s rapidly advancing nuclear program.