A Hezbollah-fired drone that killed at least four Israeli soldiers is the latest incident of an UAV bypassing the country's air defense systems.

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.

Four Israeli soldiers were killed in a drone attack launched by Hezbollah south of Haifa, one of the deadliest strikes against Israeli forces since the Jewish state has stepped up attacks on Lebanon.