With Revenge of the Dictators: The American Agent aka Bob, the first expansion of Revenge of the Dictators, an additional player can play the role of Bob, an American agent trying to stop the dictators from taking over the world.
The ultimate goal of the American agent is easy: Make it to DEFCON 1 so that the dictators automatically lose. This will make you win the game. To do this, you need to try to spot as many dictators as possible as spotting a dictator gives the American agent certain tactical advantages, e.g., increasing the DEFCON level. The American agent can go undercover, which removes their meeple from the game board so that nobody knows where Bob will move to next.