The DMZ meeting was all about shaping a narrative. That is why John Bolton, the ultra-hawkish national security adviser, was nowhere to be seen; he had been sent, or sent himself, to Ulaanbaatar, Mongolia. But the official US party included Tucker Carlson, a Fox News talkshow host, who is Trump’s principal channel to the non-interventionist section of his far-right base. Eleventh-hour conversations with Carlson reportedly persuaded Trump not to launch missiles against Iran this month, after the downing of a US drone.