https://rusi.org/sites/default/files/20181107_newsbrief_vol38_no10_chalmers_and_stefanovich_web.pdf
http://www.nationalcrimeagency.gov.uk/publications/890-the-cyber-threat-to-uk-business-2017-2018/file
https://www.telesurenglish.net/news/A-Timeline-of-NATOs-Expansion-Towards-the-Borders-of-Russia-20220324-0009.html?utm_source=planisys&utm_medium=NewsletterIngles&utm_campaign=NewsletterIngles&utm_content=14
https://www.kyivpost.com/article/opinion/op-ed/steven-pifer-ukraine-and-nato-dont-ask-do.html