With the U.S. strike on the Iranian nuclear sites, it is surely time to think about how the war with Iran might end.

President Trump has asked for “unconditional surrender,” following a president he has not before used as a model: Franklin D. Roosevelt. Continuing and expanded Israeli attacks on Iran’s nuclear, military, police, and government sites might not convince Iran’s “Supreme Leader,” Ayatollah Ali Khamenei, to seek a way out. Israeli attacks on petroleum-related targets might; a future without exporting oil could lead Khamenei to fear an economic collapse that could lead to widespread public unrest. No one knows better ...