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,

In the second round of explosions, walkie-talkies, as well as solar devices, detonated in multiple locations across Lebanon, including at a Beirut funeral for three people killed in the Tuesday attack, according to The Associated Press.