BEIRUT — An al-Qaida-linked group claimed responsibility on Saturday for a suicide car bombing last week in a Shiite-dominated neighborhood in Lebanon, as its fighters fought other rebels in neighboring Syria in the most serious infighting since the uprising began.
The al-Qaida-linked Islamic State of Iraq and the Levant had not before claimed responsibility for an attack in Lebanon, underscoring how the ever-more-complex Syrian war is increasingly spilling over into its smaller neighbor.
