The pro-Iranian militia Hezbollah said it had fired hundreds of rockets at Israel on Sunday in retaliation for the killing of one of its commanders in Beirut. Hezbollah said more than 320 rockets had been fired at Israeli military bases. It said that the “first phase” of its attack had been completed. Israel has been bracing itself for a larger attack on its northern border following the killing of Hezbollah military commander Fuad Shukr in Beirut on July 30. On Sunday, Israel’s military said it had attacked targets in southern Lebanon, where witnesses said they heard hundreds of explosions. L…