President Donald J. Trump’s trip to the Middle East on May 13-16 comes on the heels of more than three months of whirlwind activity in US foreign policy where the region has been a higher priority than it was in the early months of the previous US administration.

“The United States will ensure that Iran never gets a nuclear weapon, but also wishes for lasting peace in the Middle East, a new relationship with Iran, and for the Iranian people to reach ...