Israeli strike on Gaza humanitarian zone kills at least 19, Palestinians say NBC NewsLive updates: Israeli strike on Gaza humanitarian zone kills and injures dozens, officials say CNNAt least 19 dead in Gaza airstrike Israel says was aimed at Hamas Yahoo! VoicesAn Israeli strike on a Palestinian tent camp kills at least 19 The Associated PressWhat’s Mawasi, the Israel-designated Gaza ‘safe zone’ it bombed overnight? Al Jazeera English