President Biden insists he doesn’t want a war with Iran. The reality is that America may already be in one. Top administration officials on Monday vowed to retaliate against the Iran-backed Shiite militias thought to be responsible for a weekend drone attack in Jordan that killed three U.S. troops and wounded dozens more. It was just the latest in a long line of attacks — more than 150‚ by most counts — by Iran-linked groups on American and allied personnel and...