Strategic Premise

A major conflict erupts in the Indo-Pacific following a Chinese move against Taiwan. The United States commits the bulk of its high-end naval and air assets to the Pacific theatre, prioritising deterrence and sea control. Russia does not formally enter the war, but assesses that US strategic bandwidth is stretched, NATO political cohesion is under strain, and the threshold for escalation in Europe is temporarily higher.
Moscow therefore decides to exploit the opportunity to reshape the maritime balance in the North Atlantic, while indirectly supporting China by forcing the United States to divide attention across two theatres, writes Robin Ashby Rapporteur for the High North Observatory

The objective is not decisive confrontation. It is to create systemic pressure: to complicate reinforcement planning, to stretch NATO maritime resources, and to reinforce the security of Russia's northern bastion.
This scenario does not attempt to predict a specific course of events. It illustrates one plausible pathway through which existing structural dynamics in the High North and North Atlantic could be exploited under conditions of wider strategic distraction.

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MIND THE GAP VII — OPERATIONAL ARCHITECTURE OF THE HIGH NORTH: THE THEATRE AS IT STANDS

UK Defence Forum High North Observatory By Robin Ashby, Director General UK Defence Forum; Rapporteur, High North Observatory

The preceding papers in this series have established the historical baseline, the decades of Western strategic amnesia, Russia's systematic rebuilding of its northern military power, the transformation of the Arctic as an operational environment, and the accelerating Allied response. This paper draws those strands together into a single assessment of the High North theatre as it actually stands in the spring of 2026 — not as it was designed to look, not as declared policy describes it, but as the operational balance of capability, vulnerability and risk that any honest strategic assessment must confront.

The central finding is not comfortable for either side. Russia has degraded its own conventional Arctic capability severely through the war in Ukraine, creating a window of Western advantage that did not exist three years ago. But the Western response, while accelerating rapidly in command architecture and procurement commitments, has not yet translated those commitments into deployed capability at the scale the theatre demands. The window is open. It will not remain open indefinitely.

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