The attacks offer a rare window into the inner-workings of Hezbollah — an organization that is notoriously secretive and deeply embedded in Lebanese society.

A debate has broken out in the U.S. over whether the attacks on Hezbollah members' pagers and walkie-talkies violate international law, and here is what we know so far. Two consecutive attacks on Hezbollah using exploding pagers and walkie-talkies in Lebanon and Syria killed at least 12 people,

Spain's foreign ministry condemned this week's attacks targeting mobile communications devices used by Hezbollah members in Lebanon, saying they constituted a violation of international humanitarian law and threatened the region's stability.