Israel blames Hamas for the deaths of the three Israeli youths , although the group has denied responsibility . April : Israel responds with artillery to rocket fired from Gaza . At least 91 people have been killed since March , officials say . Spokesman for Israeli military says 30,000 reservists have reported for duty . Gaza resident says if there is a ground offensive ' I have nowhere to go '
April : Israel responds with artillery to rocket fired from Gaza . At least 91 people have been killed since March , officials say . Spokesman for Israeli military says 30,000 reservists have reported for duty . Gaza resident says if there is a ground offensive ' I have nowhere to go '