School bus driver Ali al-Dorr averts his gaze every time he passes the rubble of his son's home -- destroyed by an Israeli strike in south Lebanon despite a year-old ceasefire.

Though his son managed to evacuate in time, the attack left notebooks, papers and furniture strewn among the debris of the apartment building in Qannarit, overlooking the coastal city of Sidon, the scene of several strikes in recent weeks that Israel says targeted Hezbollah.