Hamas is readying for an Israeli ground assault by preparing snipers, suicide bombers and booby trapped tunnels to greet the IDF if they move in, Shin Bet head Yuval Diskin told the weekly cabinet meeting on Sunday. Diskin also said that Hamas was increasingly firing from built-up residential areas rather than from orchards. Nonetheless, he said, the collateral damage rate is lower now than it was two years ago. According to Diskin, Israel's goal is not only to hit those launching Kassam rockets, but also to weaken the 8,000-strong Hamas force in Gaza. In addition, Diskin pointed out that the drop in Kassam fire in last couple of days had to do with difficulty of moving the rockets from place to place.