Palestine never attacked Europe. European Jews attacked Palestine and started killing Palestinians to remove them in order to create the state of Israel. They invaded with boatloads of weapons brought in from Europe, starting in 1947 before the state of Israel even existed.

And they were doing the same stuff back then as they are doing now, such as burning children alive, as witnesses recalled during the Deir Yassin massacre, as well as rapes of Palestinians, as their own soldiers recalled. (see the amazing "Tantura" documentary describing war crimes committed by the European Jews during the Nakba)

Israel never won this war they started. They never got Palestine to surrender. This is why their homes are required to have bomb shelters, since all the Israeli colonists are living in an active war zone from a war they started.