Sea Control · CIMSEC Podcasting Team

Sea Control 575: Baltic Conundrums with Sebastian Bruns

June 4, 2025·26 min·2 clips

Sebastian Bruns reveals how Russia's 2014 actions transformed the tranquil Baltic Sea into a front line of hybrid warfare.

1. Sea Control 575 features Dr. Sebastian Bruns of the Institute for Security Policy at Kiel University discussing Baltic Sea strategic security in an interview recorded in late January 2025. 2. Sebastian Bruns is a senior researcher at ISPK Kiel, former founding director of Europe's only maritime strategy think tank (the Center for Maritime Strategy and Security, 2016-2021), former visiting professor at the US Naval Academy, and former congressional staffer for a Republican Indiana congressman who later became a US senator. 3. The episode's central text is Bruns's policy article 'Conundrums Right Ahead: Five Strategic Concerns for Baltic Sea Decision-Makers,' written originally as a speech for the Royal Swedish Society for Naval Sciences' 252nd anniversary in Stockholm. 4. Bruns describes the Baltic Sea as having been the Cold War's northern frontline between NATO and Warsaw Pact navies before becoming a 'flooded meadow' of peaceful commercial activity following the Soviet Union's collapse. 5. Russia's 2014 annexation of Crimea signaled to Eastern European NATO members that Russia was willing to use the maritime domain for hybrid pressure, including aircraft buzzing US destroyers in the Baltic. 6. After Russia's February 2022 full-scale invasion of Ukraine, the situation deteriorated further: the Nord Stream pipelines — a German-Russian natural gas infrastructure project — were sabotaged in September 2022, with the perpetrators still officially unidentified. 7. Bruns pushes back against characterizing the Baltic as a 'NATO Lake,' citing historical examples where the same designation preceded strategic surprise: the Mediterranean was called a NATO Lake before Soviet naval access, and the first German Chief of Navy called the North Atlantic a NATO Lake before Soviet submarine operations. 8. He introduces the 'inverse Vegas rule': unlike Las Vegas, what happens in the Baltic does not stay there — NATO supply routes to North America and Canada in any hot conflict with Russia would run directly through the Baltic and North Atlantic. 9. A concrete and unusual data point: approximately 1.5 million metric tons of unexploded WWII-era ammunition were dumped in the Baltic Sea at Germany's defeat, and the corroding munitions are now releasing toxins into the food chain nearly 80 years later. 10. Bruns identifies cable-cutting as a growing problem: undersea infrastructure including internet cables and energy pipelines running beneath the Baltic has been repeatedly targeted, raising questions about attribution and response mechanisms. 11. The Baltic's complexity is further increased by heavy civilian maritime traffic — ferries, cruise ships, offshore wind farms — which require full situational awareness alongside military surveillance, creating coordination challenges across many different actors. 12. He argues that Baltic navies have spent 25-30 years scaling down after the Cold War and now face a threat requiring urgent recapitalization, without the 20-25 years normally needed to rebuild fleet capacity. 13. China also has a presence in the Baltic, a detail Bruns notes and flags for further discussion, though it is not elaborated in this episode. 14. Bruns wrote the article with decision-makers explicitly in mind, aiming for a one-pager readable in the back of a limousine — he opened it with an Alice in Wonderland quotation, which he notes he deliberately removed from the German-language version because it would not land with German academic readers. 15. He proposes that the US Navy consider deploying Littoral Combat Ships to the Baltic Sea, describing it as the 'ultimate confining shallow waters' where LCS could demonstrate operational value. 16. The interview was recorded in late January 2025 and acknowledges that some situational details may have changed by the time listeners hear it. 17. The conversation is collegial and informal — both host Jay and Bruns clearly know each other well, with comfortable tangents on stereotypes, Marine Corps culture, and the Dudley Knox Library. 18. Bruns speaks with practiced accessibility, moving from academic concepts to policy recommendations without jargon, consistent with his stated goal of writing for decision-makers rather than staying in the 'ivory tower.' 19. Listeners interested in Baltic Sea security, NATO's northern flank, or undersea infrastructure protection will find this a substantive and well-framed introduction to all five strategic concerns. 20. Those wanting deep technical analysis of specific naval platforms or tactical operations in the Baltic rather than strategic policy framing may find the level of detail unsatisfying.

As heard by us

A practical look at Baltic maritime security, policy research, and writing for decision makers.

Sea Control stays focused on Baltic maritime security and the day-to-day work behind naval strategy. Sebastian Brunt lays out his Kiel role at the Institute for Security Policy, along with earlier work as a visiting professor at the U.S.

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You want a patient guide to Baltic maritime security and policy-relevant naval analysis.

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