http://www.ecfr.eu/page/-/Keeping_Europe_Safe_After_Brexit2.pdf
https://www.iai.it/sites/default/files/iaip1924.pdf
http://www.irsd.be/website/images/livres/rmb/19/ed_19_art_16.pdf
https://www.aspistrategist.org.au/nicaraguas-anti-democratic-turn-has-geopolitical-implications/