Israeli offensive in Rafah continues as Palestinian civilians flee once more

News reports say Israeli tanks this morning had entered the center of the city of Rafah, on the southern edge of the Gaza Strip. An Israeli airstrike over the weekend sparked international condemnation after dozens of Palestinians were killed near a tent camp for displaced people. A spokesman for the Israeli military today said, We are investigating what caused the fire (in the camp) that resulted in this tragic loss of life." The World's Matthew Bell has the latest.