Every president inherits from his predecessor, and every president passes on to his successor, a whole host of problems. However, there is no problem so bad that Donald Trump can't make it worse, and he usually does so by thoughtlessly, recklessly tweeting about it.  The best hope for the country, the best hope for the world, is that the worst impulses of this tragically ill-prepared president will be constrained by the rule of law, by the constitutional structures and institutions which are the foundation of our democratic republic, and by the intervention of adult supervision in the persons, especially, of Generals Kelly, McMaster and Mattis.