Israel says its forces fought Hamas gunmen inside the militants' vast tunnel network beneath the besieged Palestinian enclave of Gaza, seeking to free hostages and to push forward its campaign to wipe out the militant group. Some of the 240 hostages that Israel says were seized by Hamas that day are believed to be held in the tunnel complex, adding a further complication for the Israelis on top of the difficulties of fighting in an urban setting. Militants responded with anti-tank missiles and machine gun fire, and a number of militants were killed. Netanyahu said on Monday that Israel would not agree to a cessation of hostilities and would press ahead with its plans to wipe out Hamas.