And then there were two -History of Rome Mike Duncan

Constantine is most famous as the first Christian emperor and is often considered to be a saint. That doesn't seem to have stopped him engaging in some pretty low politics in his quest for supreme rule of the empire.  In this episode he maneuvers into position while his fellow emperor Licinius deals with Maximinus the emperor in the East.  It is all very confusing but Mike makes it clear. 

http://thehistoryofrome.typepad.com/the_history_of_rome/2011/04/134-and-then-there-were-two.html