By Maya Gebeily, Timour Azhari and James Mackenzie BEIRUT/JERUSALEM (Reuters) -Israel launched airstrikes on Beirut's southern suburbs and other areas of Lebanon on Saturday, a day after carrying out a massive attack on Hezbollah's headquarters that appeared to be aimed at killing its leader,

An unprecedented five hours of continuous Israeli strikes have hit Beirut, sending residents fleeing onto the streets. Attacks spread beyond the capital, with "massive" blasts in the south. The fate of the leader of Hezbollah remains unknown following yet more airstrikes yesterday.