Scars of war: Yemeni kids return to bombed school

With its walls pounded by artillery, roofs torn open and concrete beams in shreds, Al-Wehdah school lies in ruins as students return for the first day of Yemen's school year. At the school near Taez, the third-biggest city in a country shattered by years of war between the government and Iran-backed Huthi rebels, there are no doors or windows, let alone desks.