Trump pledged as a presidential candidate to keep America out of “stupid endless wars.” But he also vowed to prevent the Islamic Republic from obtaining a nuclear weapon.

But neither Defense Secretary Pete Hegseth nor Gen. Dan Caine, the chairman of the Joint Chiefs of Staff, could immediately say whether Iran still retained the ability to make a nuclear weapon. Mr. Hegseth repeated President Trump’s assertion from the previous night that the nuclear sites had been “obliterated.” General Caine did not.