So, about that Signal chat. On Monday, shortly after we published a story about a massive Trump-administration security breach, a reporter asked the secretary of defense, Pete Hegseth, why he had shared plans about a forthcoming attack on Yemen on the Signal messaging app. He answered, “Nobody was texting war plans. And that’s all I have to say about that.” At a Senate hearing yesterday, the director of national intelligence, Tulsi Gabbard, and the director of the Central Intelligence Agency, John Ratcliffe, were both asked about the Signal chat, to which Jeffrey Goldberg, the editor in chief of The Atlantic,...