In the ongoing offensive in Gaza, Israel shelled the headquarters of the United Nations in Gaza City. While Israeli Defense Minister Ehud Barak has said it was a "grave mistake," Secretary-General Ban Ki-Moon has expressed "strong protest and outrage" to Israel and is demanding an investigation. A U.N. spokesman said at least three people were wounded in the incident. We turn to BBC correspondent Bethany Bell in Jerusalem for more on this developing situation.
Watch CNN footage of the United Nations' headquarters in Gaza.