Israeli Prime Minister Benjamin Netanyahu on Sunday repeated calls for Iran's entire nuclear infrastructure to be dismantled, as Washington and Tehran engage in talks for a nuclear accord.

Leaders from the United States and Iran painted a positive but cautious picture of talks between the nations over Iran’s nuclear program Saturday, after the third phase of the discussions wrapped up in Oman.

Washington opposes Tehran’s insistence on retaining the ability to enrich uranium, but U.S. calls latest round “productive.”