https://www.koerber-stiftung.de/fileadmin/user_upload/koerber-stiftung/redaktion/the-berlin-pulse/pdf/2018/The-Berlin-Pulse-2018.pdf
https://dam.gcsp.ch/files/doc/policy-brief-4-future-of-neutrality?_gl=1*8d0gl7*_ga*MTA4MDQzNTMyMS4xNjc5NzU3MDMz*_ga_Z66DSTVXTJ*MTY3OTc1NzAzMi4xLjAuMTY3OTc1NzAzMi4wLjAuMA..
https://www.city-journal.org/article/israel-hamas-and-30-million-barrels-of-oil