https://www.wilsoncenter.org/article/360deg-view-policies-needed-secure-shipping-chokepoints
https://www.brookings.edu/blog/order-from-chaos/2018/01/05/the-brexit-options-explained/?utm_campaign=Brookings%20Brief&utm_source=hs_email&utm_medium=email&utm_content=59815275
https://www.rte.ie/news/analysis-and-comment/2017/1117/920981-long-read-brexit/?utm_source=POLITICO.EU&utm_campaign=693f844ad1-EMAIL_CAMPAIGN_2017_11_20&utm_medium=email&utm_term=0_10959edeb5-693f844ad1-189647205