The failed assassination attempt leaves Vito near death, making Sonny acting boss of the Corleone family. Sonny orders Clemenza to execute Vito's traitorous bodyguard Paulie Gatto. Sollozzo mounts a second assassination attempt on Vito at the hospital, which Michael prevents. Sonny then orders Bruno Tattaglia, son and underboss of Sollozzo's ally Philip Tattaglia, to be murdered. Sollozzo proposes that Michael to be sent to promote a truce. Sonny, believing it is a trick, refuses and demands that the other Mafia families hand over Sollozzo to the Corleone family or else face war. Hagen successfully convinces Sonny to wait because Captain Mark McCluskey, a corrupt NYPD captain on Sollozzo's payroll, has agreed to be Sollozzo's bodyguard. Hagen warns Sonny that killing McCluskey would violate a long-standing Mafia rule not to kill members of law enforcement, and that the backlash from rival Mafia families and law enforcement would be severe.