Israel said it carried out strikes on southern Lebanon early Saturday after the Iranian-backed militant group Hezbollah launched dozens of rockets across the border in what the group described an “initial response” to the suspected Israeli killing of a senior Hamas leader in Beirut earlier this week. Top U.S. and European diplomats, including Secretary of State Antony Blinken, are visiting the Middle East in a new push to avoid escalation after a tense week, which also included a U.S. strike in Baghdad that killed an Iran-linked militia commander.