https://rusi.org/sites/default/files/the_silent_threat_web_version.pdf
https://www.zeit.de/politik/ausland/2023-03/nordstream-2-ukraine-anschlag
https://www.wilsoncenter.org/article/360deg-view-policies-needed-secure-shipping-chokepoints
https://rusi.org/commentary/russia-clandestine-chemical-weapons-programme-bellingcat-exposure?utm_source=RUSI+Newsletter&utm_campaign=dacdefba55-EMAIL_CAMPAIGN_2020_09_10_09_43_COPY_01&utm_medium=email&utm_term=0_0c9bbb5ef0-dacdefba55-47711229