A reported Iranian attack in the Strait of Hormuz illustrates the stumbling blocks to ongoing U.S.-Iranian diplomacy that, while affording some near-term relief for supply chains reliant on the strait, will likely eventually stall on more contentious negotiations, which could prompt a resumption of limited U.S. strikes. On June 25, the United Kingdom Maritime Trade Organization reported that a cargo vessel transiting the Strait of Hormuz had been struck by a projectile, which U.S. officials subsequently blamed on Iran. This was the first reported attack in the strait since the U.S.-Iran memorandum of understanding was signed on June 17, and it is the latest sign of the challenges the United States faces in restoring shipping through the Strait of Hormuz to prewar levels.