Israel’s operation against Hezbollah members in Lebanon and Syria through booby-trapped pagers and walkie-talkies was years in the making, and its use now ramped up a high-risk campaign aimed at deeply disrupting the group.

Hezbollah and Israel have traded blows in recent days, as the conflict has escalated with few off-ramps in sight to avoid total war.

Hezbollah said on Sept. 20 that it had launched multiple strikes targeting Israel’s military in the north of the country. The Israel Defense Forces (IDF) said around 140 rockets had been launched at the Golan Heights,