Gaza is tiny and watched closely by Israel. But rescuing hostages there would be a daunting task

The Hamas-run Gaza Strip is a tiny enclave, measuring 25 miles long and no more than 7 miles wide, surveilled continually by Israel, surrounded by its guns. But rescuing - or even locating - more than 150 hostages hustled there by Palestinian militants who overran Israel's southern border on Saturday will be a daunting task.