Bible is pretty clear that God blessed Abraham’s offspring and also that whoever believes in Christ will be saved. If you want to turn everything God deems good upside down then who better to attack than Jews? They are blessed by God and as a result have power, wealth, and intelligence but no longer have a relationship with God... The same is true of Europeans and Christians who have brought the light of Christianity to the world but no longer follow God. Again they have wealth, power, and intelligence that can be used to steal, kill, and destroy because they no longer follow God. In war you attack the strongholds, occupy them, and then turn them against your enemy.