Israel's campaign to crush Hamas ground into its second month Wednesday as its forces battled the Palestinian militants in Gaza City, despite mounting calls for a ceasefire.Underlining Israel's determination to destroy Hamas, Defence Minister Yoav Gallant described Gaza as "the largest terrorist base ever built.""We are in the heart of Gaza City," he told reporters on Tuesday.Israel launched a massive campaign in the Gaza Strip after Hamas militants staged an unprecedented attack on October 7 that killed more than 1,400 people, most of them civilians.