A satellite view shows an overview of the Natanz nuclear facility near Natanz, Iran, on June 30. - Vantor/Reuters

President Donald Trump is willing to give Iran sanctions relief and release frozen funds as part of a final deal, but only if Tehran offers “concrete progress” on the nuclear issue, a US official told CNN Monday, as mediators try to bring both countries back to the negotiating table.

The United States is having “positive and constructive discussions through the mediators,” the official said, though they noted that there will not be a deal unless nuclear issues are addressed. Trump on Saturday rejected Iran’s latest proposal to reopen the Strait of Hormuz, calling it ...