Constans II was emperor of the Byzantine Empire from 641 to 668 arguably one of the harder times for the empire. As far as i am aware he tried to refocuse the empire on the mediterannean and atleast partly in the west and planned to retake italy. What if he was successfull with his plans, what would be the consequences, and also what POD could lead him to the most success ? A Sort of best case secenario for him (without it beign a wank or asb) Avoiding his assasination would probably not be enough for him to be successfull.