Israeli troops killed seven Palestinians as they intensified a campaign against rocket attacks, prompting a furious denunciation of the “Zionist enemy” by presidential election favourite Mahmud Abbas.An 11-year-old boy and five teenagers were among the victims of the tank shelling in northern Gaza, medical sources said. They were killed when troops shelled a farmhouse in the Beit Lahiya area, from where Palestinian militants have frequently fired mortars and rockets into southern Israel, witnesses and security sources said. The impact of the shelling blew some of the victims to pieces. Body parts could be seen lodged in the wreckage of greenhouses and nearby strawberry patches.Full Story