DC Comics Presents: The Teen Titans #1

Robin discovers that President Kennedy has been replaced with an alien shape-shifter from Ullustro, so the Titans head there to find out why. There, the Titans find two races locked in eternal war and President Kennedy brainwashed into being the general of one of the sides. In order to jar his memory, Robin re-creates the situation President Kennedy faced on PT 109 in World War II. Cured, President Kennedy starts peace talks before they all head home. But when he learns that the alien taking his place was shot, the real President Kennedy returns to Ullustro to complete the peace talks.