https://ec.europa.eu/commission/presscorner/api/files/document/print/en/ip_22_1511/IP_22_1511_EN.pdf
https://www.zora.uzh.ch/id/eprint/168933/1/From_welfare_to_warfare_Voth.pdf
https://rusi.org/sites/default/files/201905_op_which_rules_why_there_is_no_single_rules_based_international_system_web.pdf
https://rusi.org/sites/default/files/the_silent_threat_web_version.pdf