Beit Hanoun is a city on the northeast edge of the Gaza Strip. According to the Palestinian Central Bureau of Statistics, the town had a population of 32,187 in mid-2006. It is administered by the Hamas administration.
I'd not warn them, just kill them all.
I admire the IDF for not unnecessarily slaughtering thousands of innocent Palestinians. But I have no problem with them driving the Palestinians from the Gaza Strip and leveling it so Hamas cannot use it again to attack Israel.