When breeding viper in the back yard, it is best to keep the neighbors happy till the crop matures.
Then Jihad...
The Islamics call Spain "The Emerald of Islam" to this day, they do not call it Spain, as it was once under Moslem control. No land once under Moslem control is ever the property of infidels again. It will once again be under Moslem control, once the problem of an over abundance of Spaniards is "taken care of".