CIMSEC – NATO should not underestimate Russia’s strategic brown water capabilities. The same applies to Japan and South Korea in the event that Moscow, contrary to current indications, intends to use the Amur as a launch area to defend the Sea of Japan and the Sea of Okhotsk. Therefore, it is essential to prepare doctrinally, enhance surveillance techniques, and develop effective countermeasures. This will require more unconventional thinking—for example, the dropping of sea mines, USVs and UUVs from the air or the arming of partisans with portable anti-ship missiles such as the Swedish RBS-17. New doctrine and capabilities can effectively account for this important yet underappreciated dimension of Russian naval influence.