At a black-tie gala at Mar-a-Lago the other night, Argentine President Javier Milei couldn’t contain himself. The gathering had been arranged to celebrate the election of his guy Donald Trump, and no one was going to outdo Milei. He whirled, pivoted, swayed, bro-hugged, flashed the thumbs-up sign — sometimes one, sometimes, for emphasis, two — and beamed the broadest of smiles as the cameras flashed.