Batman Vol.1 #429
Batman and Superman talk to CIA agent Ralph Bundy about the Joker's diplomatic status; The agent tries to get Batman to leave the Joker alone; Batman goes to the Joker's hotel room; The Joker confirms that he killed Jason; The Joker pulls a gun, but Batman is already gone; At the UN the Joker tries to poison the audience; Fortunately, Superman sucks up all the poison and flies out of the room to release it; The Joker activates bombs; Batman pursues him.
Printed: Feb 1989
Writers: Jim Starlin
Art: Jim Aparo and Mike DeCarlo
Cover: Mike Mignola