As criticism mounted around his unprincipled decision to remove troops for Northern Syria on Monday, Donald Trump tweeted out about his “great and unmatched wisdom”. It was so typical of Trump; unbound egotism but also a touch of self-awareness. Was he trolling his antagonists? Or does he genuinely believe in his own powers? The answer is immaterial since both lead to the same conclusion: this isn’t an American tragedy we’re witnessing but, rather, the unfolding of the great American farce.