" Trump’s memory needed a trigger—something on his desk or something he read in the newspaper or saw on television. Or Peter Navarro sneaking into the Oval Office again. Without something or someone activating him, it might be hours or days or even weeks before he would think, Wait, we’re going to withdraw from that, why didn’t we do that? Without a trigger, it conceivably might never happen. "

― Bob Woodward , Fear: Trump in the White House