By attacking Iran, President Donald Trump triggered a crisis over the Strait of Hormuz that he’s struggled to resolve as commander-in-chief. His only way out now may be as a statesman — but the window to avoid uncontrolled escalation could be closing.

Multiple U.S. troops were recently killed in Iranian missile strikes. The memorandum of understanding whose key job was reopening the strait lies in tatters. The sides are now exchanging expanded strikes to impose their competing visions of Hormuz’s future. The prospect that the war could enter an even more dangerous phase is growing by the day.