Batman: Death in the Family

Believing that Jason Todd is becoming too aggressive in his crime-fighting, Batman decides to suspend him from his active duties as Robin; angered, Jason forsakes Batman and leaves Gotham City. The two end up reuniting in Bosnia to fight Ra's al Ghul and the Joker, who are working together to steal enough uranium to create radioactive dirty bombs. As Batman stops Ra's al Ghul's men from getting the uranium across the border, the Joker captures Robin and brutally beats him with a crowbar, leaving him to die in the warehouse that is rigged to explode.