Im wolf blitzer in jerusalem. Youre in the situation room. Were following the breaking news, commander of hamass military wing rejecting the latest proposed ceasefire with israel which had said it was ready for a truce with fighting escalating to deadly new levels, muhammad release aid defiant message saying there is no middle ground regarding a possible ceasefire until israel ends what he calls its aggression and siege of gaza. Israeli forces have dramatically stepped up their offensive in gaza pushing the death toll there to almost 1200 people. 53 Israeli Soldiers have been killed along with three civilians. We have cnns Global Resources on the story. With our correspondents and guests standing by. Sarah sider begins our coverage near the israel gaza border. Israel has been hitting a wider set of targets in gaza. Whats behind this apparently new israeli strategy . Well, i think what youre seeing is israel looking to try and really keep those rockets from coming over. We know that the