The case of the exploding pagers has grabbed the attention of the security industry, which already has its theories.

Pagers exploded across Lebanon in September. Retired Mossad agents, key to the operation, tell 60 Minutes Israel's plot started years ago with getting Hezbollah terrorists to buy walkie-talkies.

Zarif, who helped Iran reach its 2015 nuclear deal with world powers, discussed a sabotage attack launched by Israel's Mossad ...