Israel's Mossad spy agency planted explosives in 5,000 Taiwan-made pagers ordered by Hezbollah, leading to detonations across Lebanon that killed nine people and injured nearly 3,000. The operation, which targeted Hezbollah fighters and Iran's envoy to Beirut, represents a significant security breach for the group. Hezbollah has vowed retaliation against Israel. The plot highlights Israeli intelligence's deep penetration into Hezbollah operations.