Israel carried out new strikes in Lebanon on Thursday and again threatened Beirut, despite the two countries agreeing to a conditional ceasefire that Lebanon's president called the "last chance" for a durable end to the fighting. A United Nations peacekeeper was killed and two others were wounded, the UNIFIL force said, after a base was hit the previous night in the south, where Israel and the Iran-backed militant group Hezbollah are fighting. Belgrade said the slain peacekeeper was Serbian, with seven blue helmets now killed since the latest war erupted in March.