Mohammed bin Salman, the upstart Crown prince currently charged with dragging the Saudi monarchy kicking and screaming into the twenty-first century, is sometimes compared to Xi Jinping, who has similarly utilised a corruption crackdown to great effect as a means of clearing the field of political rivals. In keeping with this analogy, it is useful to reflect upon the wisdom of the great Chinese general Sun Tzu, whose volume 'The Art of War' undoubtedly graces…