
https://www.kyivpost.com/article/opinion/op-ed/steven-pifer-ukraine-and-nato-dont-ask-do.html

https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/969402/The_Integrated_Review_of_Security__Defence__Development_and_Foreign_Policy.pdf

https://www.ips-journal.eu/topics/european-integration/what-can-the-eu-offer-to-its-eastern-neighbours-5611/?utm_campaign=en_961_20211216&utm_medium=email&utm_source=newsletter