https://rusi.org/sites/default/files/201905_op_which_rules_why_there_is_no_single_rules_based_international_system_web.pdf
https://www.brookings.edu/blog/up-front/2018/07/12/as-trump-twists-natos-arm-lets-run-the-math-on-defense-spending/?utm_campaign=Brookings%20Brief&utm_source=hs_email&utm_medium=email&utm_content=64421876
https://www.friendsofeurope.org/sites/default/files/media-files/uk_report_web.pdf
https://www.nato.int/nato_static_fl2014/assets/pdf/pdf_2018_03/20180315_SG_AnnualReport_en.pdf
http://intersectionproject.eu/article/security/political-renewal-russian-army
http://www.euronews.com/2018/07/18/trump-calls-out-very-aggressive-montenegro-latest-nato-jibe-n892311?utm_source=newsletter&utm_medium=en&utm_content=trump-calls-out-very-aggressive-montenegro-latest-nato-jibe-n892311&_ope=eyJndWlkIjoiZjU3Y2JhYmUwMGUxZDFiNTUxOTU1ZDljNzExNTI1MmEifQ==
https://www.brookings.edu/blog/order-from-chaos/2018/07/18/chaos-from-order/?utm_campaign=Brookings%20Brief&utm_source=hs_email&utm_medium=email&utm_content=64558751
https://sipri.org/media/press-release/2018/global-military-spending-remains-high-17-trillion
http://www.css.ethz.ch/content/dam/ethz/special-interest/gess/cis/center-for-securities-studies/pdfs/ST2018.pdf
https://www.dinsakerhet.se/siteassets/dinsakerhet.se/broschyren-om-krisen-eller-kriget-kommer/om-krisen-eller-kriget-kommer—engelska.pdf