Israel kills 40 Palestinians in Gaza airstrikes amid fears of wider war ReutersAt least 15 killed, 30 wounded in Israeli bombing of two schools in Gaza Al Jazeera EnglishWho is Yahya Sinwar, the new leader of Hamas? The Associated PressReport: 15 killed in strikes on schools in northern Gaza; IDF: Targets were used by Hamas HaaretzIAF strikes Hamas command centers concealed in schools in Gaza The Jerusalem Post