Opinion : Palestinian official : Israeli forces shelled a school Wednesday , killing 20 . Score: 6 `` Hamas is responsible for all deaths , '' Netanyahu 's spokesman tells CNN . Hamas says truce must include an end to Israel 's blockade of Gaza .
Palestinian official : Israeli forces shelled a school Wednesday , killing 20 . Score: 6 `` Hamas is responsible for all deaths , '' Netanyahu 's spokesman tells CNN . Hamas says truce must include an end to Israel 's blockade of Gaza .