Israel controls 2 lands borders with Gaza. They are completely shut down nothing goes in or out. They also have the 3rd mediterraian sea boder shut down. You saw that when their patrol boats rammed that ship trying to deliver aid. So nothing can come in by sea. The only border that israel does not control is the small southern border with Egypt. Egypt is so afraid of Irael they even shut down that border with the exception of a few underground tunnels the people in Gaza built. They are so few and small that reports say that the only thing they allow to be smuggled in is food. If they allowed rockets and war materials to be smuggled in then they would starve so what would be the point? Egypt would never allow weapons to be smuggled in anyways. The last thing they want is Israel whining about that. So I really don't see how it is possible for the people in Gaza to have much of anything when it comes to weapons.