The first eye-witness accounts have emerged from the Syrian town of Houla, where more than a hundred people were killed on Friday in what the United Nations is calling a brutal massacre.
Dozens of children were among the dead when tanks and artillery bombarded a residential area.
The UN envoy on Syria, Kofi Annan, who's in Damascus, said he was personally shocked by the killings.
Human Rights Watch is calling for an independent inquiry into last week's massacre.
Anchor Marco Werman speaks with Nadim Houry of Human Rights Watch about how such an inquiry would take place.