Jan 6 - Israeli tank fire has killed at least 40 Palestinians sheltering at a United Nations school in Gaza.
It was the second such attack on a U.N. school on Tuesday. Three Palestinians were killed in an earlier strike.
Hundreds of Palestinians have been killed since Israel began its offensive in Gaza 11 days ago.
Helen Long reports.
A demonstrator shouts as she holds up a painted doll during a protest against Israel's Gaza offensive outside Israel's Embassy in Mexico City, January 6, 2009. Israel and Hamas studied a ...
