http://www.pircenter.org/en/news/6973-1224507
http://www.ecfr.eu/page/-/Keeping_Europe_Safe_After_Brexit2.pdf
http://www.kas.de/wf/doc/kas_450-2190-2-30.pdf?170424105349
https://www.aspistrategist.org.au/sharks-for-filling-the-moat-what-andurils-autonomous-submarines-can-do-for-australia/