Gaza: Deadly attack on U.N. school

Artillery hit a United Nations school in Gaza that was sheltering thousands of Palestinians. An initial review by the Israeli military found that its forces were responding to nearby mortar fire. The United Nations and the White House condemned the attack. Karl Penhaul got an up close look at the immediate aftermath.

Anderson discussed the deadly attack with Pierre Krahenbuhl, who is the Director of Operations for the U.N. Relief and Works Agency.