Israel has eliminated half Hezbollah's leadership council, destroyed many of its weapons dumps. In the wake of Sayyed Hassan Nasrallah's killing, Hezbollah faces the enormous challenge of plugging the infiltration in its ranks that allowed its arch enemy Israel to destroy weapons sites, booby-trap its communications and assassinate the veteran leader, whose whereabouts had been a closely guarded secret for years. Nasrallah's killing in a command HQ on Friday came barely a week after Israel's deadly detonation of hundreds of booby-trapped pagers and radios. It was the culmination of a rapid succession of strikes that have eliminated half of Hezbollah's leadership council and decimated its top military command.