http://dip21.bundestag.de/dip21/btd/19/072/1907200.pdf
https://www.brookings.edu/research/a-post-american-europe-and-the-future-of-u-s-strategy/
https://committees.parliament.uk/publications/41073/documents/200048/default/
https://www.institute.global/insights/geopolitics-and-security/reimagining-defence-and-security-new-capabilities-for-new-challenges