Donald Trump’s hints that he may dispatch the US military to help Israel destroy Iran’s nuclear program has spurred a revolt from his typically faithful America First base, further dividing a party already struggling to unite around the president’s second-term agenda.

Authorizing foreign wars is the job of U.S. lawmakers, but recent presidents have stretched their own powers to engage in global conflicts.

The president told reporters at the White House Wednesday that Iranian officials are eager to negotiate but it may be too late.