Obviously you are unaware of the fact that the Palestinians in accordance to Oslo admitted to having 80,000 illegal weapons (among the civilians) in the territories. They, according to Oslo, were supposed to collect them. Arafat said he could only find 12.
Israel gave the Palestinians 40,000 arms for their police (the same police responsible for stopping the terror)
Please the Palestinians are not unarmed.
In fact, they are firing missles into Israel from Gaza as recently as last week.