Secretary of State John Kerry says the U.S. friendship with Saudi Arabia is stronger than ever and that the two will work together to try to end wars in Syria and Yemen.

As he wrapped up a visit to Riyadh, Kerry said Sunday that the U.S. has "as strong a friendship with the kingdom of Saudi Arabia as we have ever had," adding that "nothing has changed" because of the Iran nuclear deal.

Saudi Arabia has long viewed Iran as a regional menace. The historic deal, implemented a week ago, lifted sanctions on Tehran and unfroze billions of dollars in assets.

Kerry said he had discussed ways to end the fighting in Syria and "new ideas" to bring peace to Yemen, where the Saudi-backed government is battling Iran-supported Shiite rebels.