Terrified revellers fled for their lives as they were surrounded by Hamas gunmen who descended on the site in paragliders, motorbikes and pick-up trucks. It was several hours before help would arrive, leaving militants armed with rocket-propelled grenades and machine guns free to carry out a murderous rampage. At least 260 were killed in the massacre while many are still missing - probably dead or taken hostage by the bloodthirsty militants. As rescuers continue to sift through the deadly wreckage of the attack yesterday, the Mail recounts how the terror