gaza-warDay 13 was the bloodiest so far. More than one hundred Palestinians were killed in heavy bombardment and street battles in Gaza on Sunday and 13 Israeli soldiers were slain in the most intense day of fighting in Israel’s current offensive against Hamas, officials said. Israel said it pummeled a neighborhood in east Gaza because the warren of shops and concrete-block homes was the site of frequent rocket launches and concealed a network of tunnels dug by Hamas fighters and allied militant factions. When their troops went in, Israeli military officers say, they were surprised by the tenacity, training and weaponry of their opponents. They said Israeli soldiers were repeatedly hit by Gaza militants firing from windows, employing land mines and setting booby traps. More