A positive aspect of the Bush legacy The international community now has a potent new motivating tool to dissuade world leaders from engaging in tyranny and aggression — tell them they’ll be like George Bush if they do it: Nicolas Sarkozy saved the President of Georgia from being hanged “by the balls” — a threat made last summer by Vladimir Putin, according to an account that emerged yesterday from the Elysee Palace. . . . The Russian seemed unconcerned by international reaction. “I am going to hang Saakashvili by the balls,” Mr Putin declared. Mr Sarkozy thought he had misheard.…