For millions of Lebanese, this week's mass explosion of pagers and walkie-talkies, with its bloody aftermath, is painfully similar to the horrific explosion four years ago of haphazardly stored ammonium nitrates that tore through Beirut's port,

Israel said it pounded Lebanon's Hezbollah, just hours after the group's leader vowed retribution for deadly explosions that targeted its communication devices, killing 37 people and wounding thousands.