Hezbollah’s deadly attack against an army base deep inside Israeli territory presents a major headache for Israel as it continues to struggle to defuse the threat posed by the group.

Israel has one of the world’s best defenses against missiles and rockets, but struggles to detect slower-moving unmanned aircraft, experts said.

A single drone, which evaded Israel’s vaunted aerial defense system, slammed into a mess hall at a military training camp deep inside Israel, killing four soldiers and wounding dozens of others