Deterring the Seabed: A Strategic-Theory Framework for Undersea-Infrastructure Defence in the Post-Accession Baltic
By: Göran Roos
References
- Åklagarmyndigheten. (2025, October 13). Förundersökning om grovt sabotage av kommunikationskabel läggs ned [Preliminary investigation into aggravated sabotage of communications cable discontinued] [Press release].
https://www.aklagare.se/for-media/pressmeddelanden/2025/oktober/forundersokning-om-grovt-sabotage-av-kommunikationskabel-laggs-ned/ - Braw, E. (2025, November 26). How the Baltic Sea nations have tackled suspicious cable cuts [Issue brief]. Atlantic Council, Scowcroft Center for Strategy and Security.
https://www.atlanticcouncil.org/in-depth-research-reports/issue-brief/how-the-baltic-sea-nations-have-tackled-suspicious-cable-cuts/ - Brodie, B. (Ed.) (1946). The absolute weapon: Atomic power and world order. Harcourt, Brace.
- Bueger, C., & Liebetrau, T. (2021). Protecting hidden infrastructure: The security politics of the global submarine data cable network. Contemporary Security Policy, 42(3), 391–413. 10.1080/13523260.2021.1907129
- Bueger, C., & Liebetrau, T. (2023). Critical maritime infrastructure protection: What’s the trouble? Marine Policy, 155, 105772. 10.1016/j.marpol.2023.105772
- Bueger, C., Liebetrau, T., & Franken, J. (2022). Security threats to undersea communications cables and infrastructure – consequences for the EU [In-depth analysis]. European Parliament, Sub-Committee on Security and Defence.
- Chiang, H.-C., & Liao, P.-H. (2025, November 27). The “Hong Tai 58” case and criminal jurisdiction over submarine cable sabotage in “new” internal waters (Prospects & Perspectives No. 65). Prospect Foundation.
https://www.pf.org.tw/en/pfen/33-11657.html - Corbett, J. S. (1911). Some principles of maritime strategy. Longmans, Green.
- Cormac, R., & Aldrich, R. J. (2018). Grey is the new black: Covert action and implausible deniability. International Affairs, 94(3), 477–494. 10.1093/ia/iiy067
- Coté, O. R.
Jr. (2003). The third battle: Innovation in the U.S. Navy’s silent Cold War struggle with Soviet submarines (Newport Paper 16). U.S. Naval War College Press. 10.21236/ADA421957 - Dahl, A.-S. (Ed.) (2018). Strategic challenges in the Baltic Sea region: Russia, deterrence, and reassurance. Georgetown University Press. 10.2307/j.ctvvnh3m
- Dombrowski, P., & Jones, B. (2025, March 21). It’s time to deter undersea cable sabotage. Foreign Policy.
https://foreignpolicy.com/2025/03/21/undersea-cables-sabotage-hybrid-conflict-deterrence/ - Estonian Foreign Intelligence Service. (2026). International security and Estonia 2026. Välisluureamet.
- Farrell, H., & Newman, A. L. (2019). Weaponized interdependence: How global economic networks shape state coercion. International Security, 44(1), 42–79. 10.1162/isec_a_00351
- Federal Public Prosecutor General. (2026, July 2). Indictment filed regarding the Nord Stream gas pipelines explosions [Press release].
https://www.generalbundesanwalt.de/SharedDocs/Pressemitteilungen/EN/2026/Pressemitteilung-vom-02-07-2026-engl.html - Fiala, O. C. (2020). Resistance operating concept. Joint Special Operations University Press.
- Gartzke, E., & Lindsay, J. R. (Eds.) (2019). Cross-domain deterrence: Strategy in an era of complexity. Oxford University Press. 10.1093/oso/9780190908645.001.0001
- Helsingin hovioikeus. (2026, August 27). Tiedote hovioikeuden päätöksestä ns. Eagle S -aluksen asiassa (R 16/2025/2572) [Bulletin on the Court of Appeal’s decision in the so-called Eagle S vessel case] [Press release].
https://www.tuomioistuimet.fi/ajankohtaista/tiedotteet/tiedote-hovioikeuden-paatoksesta-ns-eagle-s-aluksen-asiassa-r-16-2025-2572/ - Insikt Group. (2025). Submarine cables face increasing threats amid geopolitical tensions and limited repair capacity. Recorded Future.
- Kello, L. (2017). The virtual weapon and international order. Yale University Press. 10.2307/j.ctt1trkjd1
- Krychkovska-Bogdanova, U., & Tyshchenko, K. (2026, August 23). Zelenskyy: Ukraine was not behind Nord Stream sabotage and is willing to assist investigation. Ukrainska Pravda.
https://www.pravda.com.ua/eng/news/2026/08/23/8049956/ - Libicki, M. C. (2009). Cyberdeterrence and cyberwar. RAND Corporation.
https://www.rand.org/pubs/monographs/MG877.html - Lindsay, J. R. (2015). Tipping the scales: The attribution problem and the feasibility of deterrence against cyberattack. Journal of Cybersecurity, 1(1), 53–67. 10.1093/cybsec/tyv003
- Mahan, A. T. (1890). The influence of sea power upon history, 1660–1783. Little, Brown.
- Mahnken, T. G., Sharp, T., & Kim, G. B. (2020). Deterrence by detection: A key role for unmanned aircraft systems in great power competition. Center for Strategic and Budgetary Assessments.
- Majcin, J. (2025, April 22). Battle of the Baltic: Safeguarding critical undersea infrastructure [Commentary]. European Policy Centre.
https://www.epc.eu/publication/Battle-of-the-Baltic-Safeguarding-critical-undersea-infrastructure-645780/ - Matisek, J., Langan, J., Rolander, A. M., & Brown, D. A. (2025). Seabed warfare is here: A U.S.-led global strategy to secure the ocean floor (Policy Paper No. 1). U.S. Naval War College, Center on Irregular Warfare and Armed Groups.
- Mearsheimer, J. J. (1983). Conventional deterrence. Cornell University Press.
- National Bureau of Investigation. (2025, May 9). Cooperation in Balticconnector case to continue [News item]. Police of Finland.
https://poliisi.fi/en/-/cooperation-in-balticconnector-case-to-continue - Neal, A. W. (2026). After Nord Stream: Four security dilemmas in critical maritime infrastructure protection. International Affairs, 102(1), 207–225. 10.1093/ia/iiaf229
- Nye, J. S. (2017). Deterrence and dissuasion in cyberspace. International Security, 41(3), 44–71. 10.1162/ISEC_a_00266
- Nyon Arrangement, Sept. 14, 1937, 181 L.N.T.S. 135.
- Office of the President, Republic of China (Taiwan). (2026, January 5). Zongtongfu gongbao [Presidential Office gazette] (No. 7835).
https://www.president.gov.tw/File/Doc/c98264a2-253b-4b11-bb0e-4328209445a5 - Police of Finland. (2025, March 2). Eagle S tanker to move to international waters under Border Guard’s control [News item].
https://poliisi.fi/en/-/eagle-s-tanker-to-move-to-international-waters-under-border-guard-s-control - Rid, T. (2013). Cyber war will not take place. C. Hurst & Co.
- Rid, T., & Buchanan, B. (2015). Attributing cyber attacks. Journal of Strategic Studies, 38(1–2), 4–37. 10.1080/01402390.2014.977382
- Schelling, T. C. (1966). Arms and influence. Yale University Press. 10.2307/j.ctt5vm52s
- Smoke, R. (1977). War: Controlling escalation. Harvard University Press. 10.4159/harvard.9780674434561
- Snyder, G. H. (1961). Deterrence and defense: Toward a theory of national security. Princeton University Press. 10.1515/9781400877164
- Statens haverikommission. (2025, April 15). SHK:s observationer ombord på det kinesiska lastfartyget YI PENG 3 [SHK’s observations on board the Chinese cargo ship YI PENG 3] (Dnr A-166/24) [Memorandum].
https://shk.se/download/18.ffd11bf19626c638f3623/1744702687838/YP3-PM%202025-04-15%20-%20slutlig.docx.pdf - The Maritime Executive. (2026, February 11). Captain pleads not guilty as China prosecutes for Baltic cable damage.
https://maritime-executive.com/article/captain-pleads-not-guilty-as-china-prosecutes-for-baltic-cable-damage - TV Kurzeme. (2026, January 5). Valsts policija: Kabeļa bojājumu Baltijas jūrā varēja radīt arī vētra [State Police: The cable damage in the Baltic Sea may also have been caused by a storm]. LSM.lv.
https://www.lsm.lv/raksts/zinas/latvija/05.01.2026-valsts-policija-kabela-bojajumu-baltijas-jura-vareja-radit-ari-vetra.a628669/ - United Nations. (1982). United Nations Convention on the Law of the Sea. 1833 U.N.T.S. 397.
- Wirtz, J. J. (2018). How does nuclear deterrence differ from conventional deterrence? Strategic Studies Quarterly, 12(4), 58–75.
- Wither, J. K. (2020). Back to the future? Nordic total defence concepts. Defence Studies, 20(1), 61–81. 10.1080/14702436.2020.1718498
- Yle News. (2026, September 8). Fitburg defendants deny sabotage as second anchor-dragging trial begins.
https://yle.fi/a/74-20245189
DOI: https://doi.org/10.31374/sjms.650 | Journal eISSN: 2596-3856
Language: English
Page range: 606 - 620
Submitted on: Jun 20, 2026
Accepted on: Sep 25, 2026
Published on: Oct 14, 2026
Published by: Scandinavian Military Studies
In partnership with: Paradigm Publishing Services
Keywords:
© 2026 Göran Roos, published by Scandinavian Military Studies
This work is licensed under the Creative Commons Attribution 4.0 License.