Macbeth 3000: This Time, It's Personal(2005)

The President is dead. Murdered in his sleep by an unknown assassin. British Agent MacDuff is sent in to investigate and soon finds himself confronting an old ally Macbeth - only this time, he's the president... and it's also very personal as implied by the subtitle. As stakes rise, car chases & light-sword battles ensue, allies become enemies and it becomes clear that there can be only one!