Israeli army tanks line up on the Gaza border Sunday. A ground war seems likely --- especially in the wake of reports that Israeli commandos conducted an overnight raid on Gaza. So far, at least 20,000 reservists have been mobilized. But despite intensified Israeli military action, Islamist Hamas continued to launch rockets on Israeli cities. In the Israeli city of Ashkelon, one teenager was seriously wounded after being hit with shrapnel in the head and chest.