BEIRUT, Lebanon (AP) — Israeli airstrikes have killed at least 11 people and injured dozens in central Beirut, as diplomats scramble to broker a cease-fire. The Lebanese civil defense said the death toll was provisional as emergency responders were still digging through the rubble looking for survivors Saturday morning. The strikes were the fourth on the Lebanese capital in less than a week. The escalation comes after U.S. envoy Amos Hochstein traveled to the region this week in an attempt to broker a cease-fire deal to end the more than 13 months of fighting between Israel and Hezbollah, which has erupted into full-on war in the past two months.