An Israeli man takes cover next to a car as a siren sounds warning of incoming rockets in the southern town of Ashkelon January 13, 2009. Israeli forces tightened their hold around the city of Gaza on Tuesday and Israel's top general said "there is still work ahead" against Hamas in an 18-day-old offensive that has killed more than 900 Palestinians. Thirteen Israelis -- 10 Israeli soldiers and three civilians hit by mortar bombs and rockets from the Gaza Strip -- have been killed since Israel launched the offensive with the declared aim of ending Hamas's cross-border strikes. REUTERS/Jerry Lampen (ISRAEL)
REUTERS/JERRY LAMPEN