GAZA CITY — The top leader of dared on Monday to launch a ground invasion of and dismissed diplomatic efforts to broker a cease-fire in the six-day-old conflict, as the Israeli military conducted a new wave of deadly airstrikes on the besieged enclave, including a second hit on a 15-story building that houses media outlets. A volley of rockets fired from Gaza into southern Israel included one that hit a vacant school.
Speaking at a news conference in Cairo, where the diplomatic efforts were under way, the Hamas leader, , suggested that the Israeli infantry mobilization on the border with Gaza was a bluff on the part of Prime Minister Benjamin Netanyahu of Israel.
“If you wanted to launch it, you would have done it,” Mr. Meshal told reporters. He accused Israel of using the invasion threat as an attempt to “dictate its own terms and force us into silence.”