https://www.aspistrategist.org.au/regional-environment-behind-recent-terror-attacks-will-likely-support-extreme-groups/
https://www.swp-berlin.org/publications/products/comments/2022C35_Turkey_RelationsRussia.pdf
http://www.dw.com/en/turkey-eu-relations-which-countries-are-for-or-against-turkish-accession/a-40381533