Jon Stewart — after getting the news of the night, that he was not invited to the Met Gala, out of the way — set his sights on the continuing saga of “our situationship with Iran .” “Is it a war? Is it a ceasefire? Are we friends with bomb-ifits? I don’t know,” he quipped at the outset of Monday’s Daily Show monologue. “Because, as you know, Friday marked the expiration of the 60-day free-trial period presidents get to do wars. After 60 days, the president must ask Congress, who then decides: Are we subscribing? Or, are we just going to use Israel’s password?” In a Florida address made on Friday, president Donald Trump indicated he didn’t need congressional approval via the War Powers Resolution as he is calling it a military operation. “You almost have to admire the brazenness of a president just casually explaining … how to get around our pesky, uh, laws,” Stewart said. “Just not a care in the world. It’s like going up to a McDonald’s cashier: Yeah, I’m going to get a cup of water.…