U.S. President Donald Trump announced a ceasefire agreement between the United States and the Houthi rebels in Yemen. The United States had been carrying out an air campaign against the Houthis since mid-March, in response to Houthi attacks on commercial shipping in the Red Sea. According to the foreign minister of Oman, which helped broker the agreement, the United States agreed to stop striking Houthi targets in exchange for the Houthis stopping attacks against U.S. vessels. It was not clear whether the Houthis agreed to halt attacks on other vessels.