New Delhi, June 24 -- U.S. Secretary of State Marco Rubio is in the United Arab Emirates on the first leg of a three-nation tour of Gulf countries aimed at easing their concerns about the result of an agreement intended to end the war with Iran.

Rubio arrived in Abu Dhabi late Tuesday following a two-day flurry of diplomatic activity between the U.S. and Iran in Switzerland led by Vice President JD Vance that resulted in what Vance says is a significant agreement to end all hostilities in the region, reopen the Strait of Hormuz and provide sanctions relief with negotiations on its nuclear program to be concluded in 60 days.

In the UAE, Kuwait and Bahrain - all nations that Iran hit with missiles and drones in retaliation for U.S.-Israel...