The pro-Iranian Hezbollah chief Hassan Nasrallah vowed on Thursday to avenge the Israeli assassination of the movement’s top commander, Fuad Shukr, with an imminent retaliatory attack on Israel. “Our response is coming,” Nasrallah said during the funeral of Fuad Shukr, the group’s top military commander and the head its operations in southern Lebanon. His comments came shortly before at least four Syrian nationals were killed when an Israeli strike hit a building in southern Lebanon, security sources and the Lebanese Health Ministry said. The ministry said that large quantities of body parts w…