https://www.timesofisrael.com/eu-chief-backs-imposing-sanctions-on-israeli-extremists-in-west-bank/
https://www.crisisgroup.org/middle-east-north-africa/gulf-and-arabian-peninsula/iran-saudi-arabia/impact-saudi-iranian
https://theconversation.com/las-leyes-de-lanchester-guerras-y-ecuaciones-222469