The Iran war could be entirely in vain, according to Donald Trump.Seated beside German Chancellor Friedrich Merz at the White House on Tuesday, Trump spelled out that the worst-case scenario for U.S. involvement in Iran could see another authoritarian regime taking control of the country.“What’s the worst-case scenario that you have planned for in Iran?” asked a reporter.“Well, I don’t know if there’s a worst case,” Trump said. “We have them very much beaten militarily, from a military standpoin...