Israeli troops may be quitting southern Lebanon, but they’re leaving behind about a million unexploded cluster bomblets, nearly half the number they fired or dropped during the recent conflict. They’re stuck in the ground and scattered “in bushes, trees, hedges and wire fences,” representing a serious threat to human life and delaying the return home of about 200,000 people displaced by the war by up to 2 years. The UN last month called Israel’s use of the bombs “immoral,” though their use is legal under international law.