In July 2006, a group of Hezbollah fighters crossed from southern Lebanon into northern Israel killing three Israeli soldiers and abducting two, which started the Lebanese-Israeli war. Faced with Israeli's air attacks, Hezbollah needed to create a defensive system that would enable these rocket attacks to continue uninterrupted throughout any conflict with Israel. To do so they created an intricate system of tunnels and underground bunkers, anti-tank units, and explosive-ridden areas.