https://securityconference.org/assets/user_upload/MunichSecurityReport2020.pdf
https://supo.fi/documents/38197657/39761266/National+Security+Overview+2021.pdf/a772aa98-30bc-1bcc-62c0-9d77dda2733b/National+Security+Overview+2021.pdf?t=1649405324653
http://www.ecfr.eu/article/commentary_germanys_defence_commitments_nothing_but_paper_tigers
https://rusi.org/sites/default/files/20200221_roberts_integrated_review.pdf