ABU DHABI, United Arab Emirates (AP) — 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.-Israeli airstrikes — Rubio will be holding meetings starting Wednesday with leaders who, in some cases, have taken a harder line on Iran recently than has the Trump administration.

In brief comments to reporters on his arrival, Rubio said he would explain the benefits of the agreement to the skeptical Gulf states if it is implemented. He said that a proposed $300 billion investment fund for Iran would not become a reality unless “its leadership makes a decision that they want to be a country instead of a revolutionary movement that exports terror.”