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,

Washington and Tehran have taken a tough public stance before talks, with enrichment a key point of contention.