White House spokesperson John Kirby said on Friday that while Washington was not directly involved, Saudi Arabia kept U.S. officials informed of the talks with Iran. NUCLEAR TALKSThe agreement comes as Iran accelerates its nuclear program after two years of failed U.S. attempts to revive a 2015 deal that aimed to stop Tehran producing a nuclear bomb. "Saudi Arabia is deeply concerned about Iran's nuclear program," he said. "If this new opening between Iran and Saudi Arabia is going to be meaningful and impactful, it will have to address the concerns about Iran's nuclear program - otherwise the opening is just optics." Friday's agreement also offers hope for more durable peace in Yemen, where a conflict sparked in 2014 has widely been seen as a proxy war between Saudi Arabia and Iran.

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