Toward the end of the Obama administration’s negotiations over its Iran nuclear deal in 2015, then-presidential candidate Donald Trump chimed in with some advice from his book, “The Art of the Deal.”

President Donald Trump has made a few guarantees about a deal to end the war he started with Iran.

As Trump’s agreement with Iran starts looking even worse under scrutiny, Tom Nichols of The Atlantic explains how this whole fiasco has left the U.S. in a weaker position than…