Israel on Friday carried out its first major airstrike on Beirut's southern suburbs in months, retaliating for an earlier rocket launch from Lebanon in the most serious test of a shaky ceasefire deal agreed in November.

Israel launched an airstrike on Beirut for the first time since a U.S.-backed cease-fire took effect in November, amid growing frustrations among some American officials about the Lebanese government’s slow progress in disarming Hezbollah in the country’s south.