As the war with Iran intensifies, Trump is demanding that allies help the U.S. reopen the Strait of Hormuz. And, a federal judge halts RFK Jr.'s changes to children's vaccine policies. Good morning. You're reading the Up First newsletter. Subscribe here to get it delivered to your inbox, and listen to the Up First podcast for all the news you need to start your day. Today's top stories A second front in the U.S. and Israel's war wi... [6583 chars]