Ceasefire hangs by a thread as US and Iran trade fire in Strait of Hormuz

The United States and Iran exchanged fire on Thursday in the Strait of Hormuz, according to an Axios report.
A U.S. official confirmed the attack, saying the U.S. had conducted strikes on targets in the strait. It appeared to happen as the U.S. attempted to enforce the blockade.
The Iranian navy targeted three U.S. destroyers, according to Iranian state media. The country's military said the U.S. had targeted an oil tanker and another ship entering the vital trade channel.
"The U.S. official said the exchange did not constitute a resumption of the war, but the Iranian military described the U.S. strikes as a ceasefire violation and threatened retaliation. The extent of the strikes and resulting damage are unclear at this time," Axios reported.
The exchange happened as both countries were negotiating a one-page memo in an effort "to end hostilities and lay the groundwork for more detailed negotiations."