By Robin Ashby, Chair, Eurodefense Russia Observatory
From an original paper by Joseph E. Fallon first published at Defence Viewpoints. Revised and updated April 2026. (AI assisted)

Summary: The Russian Pacific Fleet is the second largest of Russia's four fleets and, in submarine terms, the most consequential after the Northern Fleet. Unlike the Baltic and Black Sea Fleets, it has not been materially degraded by the Ukraine war: its surface ships remain operational, its SSBN force has been reinforced, and its programme of new-build submarines continued without interruption through 2025. Its strategic purpose is nuclear deterrence from the Sea of Okhotsk bastion, sea-denial against the US Seventh Fleet and Japan's Maritime Self-Defence Force, and the projection of Russian presence across a theatre stretching from the Arctic to the Indian Ocean. The Russia-China naval relationship, exercised annually since 2012 and deepened in 2025 to include the first joint submarine patrols, adds a dimension that changes the strategic calculus for every US and allied planner in the Indo-Pacific.

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By Robin Ashby, with additional material by Joseph E. Fallon

First published at Defence Viewpoints, 23rd March 2024. Revised and updated April 2026.

Summary: The Russian Baltic Fleet is the smallest and most constrained of Russia's four fleets. NATO's encirclement is now essentially complete following Finnish and Swedish accession, and the fleet's operational freedom in the open sea is severely curtailed. Yet the conventional analysis that this renders the Baltic Fleet strategically irrelevant misreads its purpose. Its utility is not blue-water combat but denial: the ability to mine the Danish Straits, threaten critical undersea infrastructure, and hold the Baltic littoral economies at risk from Kaliningrad's missile arsenal. Since 2024, Russia has demonstrated that warfare below the threshold of conventional conflict — conducted through shadow fleet vessels and infrastructure sabotage — extends the fleet's strategic reach far beyond its naval order of battle suggests.

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