Israel/Palestine

"The Crusades were a series of religious wars fought between Christians and Muslims in the Middle Ages.

There were six major Crusades:

The First Crusade lasted from 1096 to 1099.
The Second Crusade began in 1147 and ended in 1149.
The Third Crusade started in 1189 and was concluded in 1192.
The Fourth Crusade got underway in 1202 and ended in 1204.
The Fifth Crusade lasted from 1217 until 1221.
The Sixth Crusade occurred in 1228–29.
The Crusades lasted for a period of around 200 years in total."

So 16+ years of actual war.
Do we really want to go back to that?

I don't know the OP or where he lives, or even if he is sincere in his panic, but if he is, I'd suggest he Googles 'Doomsday Preppers' because there is a lot he can do to protect himself if it comes to an invasion of fanatics wanting to kill him.