Iran and the United States concluded a fifth round of high-stakes nuclear talks in Rome on Friday amid growing skepticism in Tehran about the chances of a deal as Washington hardens its position.

In Rome, Iran and the United States have made slight progress in discussions regarding Iran's nuclear program, mediated by Oman. While disagreements persist over uranium enrichment, both sides express commitment to resolving the long-standing dispute,

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.