Israeli troops battle Hamas fighters in a packed refugee camp as they expand operations across northern Gaza. The war, now in its seventh week, has shifted to the Jabaliya camp, a dense warren of concrete buildings near Gaza City. Israel has been bombarding the area for weeks, and the military said Hamas fighters have regrouped there and in other eastern districts after being pushed out of much of Gaza City. Israeli forces have a 'full grasp' on Jabaliya and are starting to dismantle a Hamas brigade there. The war sparked by Hamas' surprise attack into Israel has exacted a heavy toll on Palestinian civilians, particularly those who remain in the north after Israel repeatedly called on people to flee south.