This is, of course, somewhat common fare by this point in the arc of Trump's presidency. Faced this week with storylines he doesn't like -- questions about the Niger attack, controversy over a phone call he placed to the widow of one of the soldiers lost in that attack, Attorney General Jeff Sessions on Capitol Hill facing questions about Russian meddling in the election -- he aims to change the subject via his Twitter feed. And he often does so by lobbing out a conspiracy theory with only the loosest ties to the factual world.