Britain Must Take the High North Seriously

As global attention is drawn to conflicts elsewhere, from Eastern Europe to the Middle East, another strategic theatre is rapidly rising in importance: the High North. It may feel distant from daily life in Britain, but the reality is that developments in the Arctic have direct implications for our national security, economic resilience and NATO’s ability to deter aggression.

If we get our posture wrong in the High North, we risk far more than diminished influence in a remote region. We put the security of the North Atlantic at stake, expose our critical national infrastructure to disruption, and weaken NATO’s ability to reinforce allies in a crisis. The Arctic is no longer a peripheral concern — it is becoming a frontline of strategic competition.

The first reason for this shift is geography itself. Climate change is transforming the Arctic environment at pace. Receding ice is opening up new sea routes, extending operating seasons and increasing access to the region’s vast natural resources, from energy reserves to critical minerals. For Arctic-bordering states this presents economic opportunity, but it also creates risk.

Greater accessibility means increased shipping, exploration and commercial activity. With that comes more congestion, more accidents and greater opportunity for coercion in a region that already suffers from vast distances and limited infrastructure. The Arctic is becoming busier at the same time as it becomes more contested.

Equally important is the growing vulnerability of undersea infrastructure. Britain’s economy relies heavily on seabed cables and pipelines carrying data, electricity and gas. A serious incident affecting this infrastructure — whether deliberate or accidental — could have far-reaching consequences. These threats often sit in the grey zone: difficult to attribute, hard to deter and costly when they occur.

Meanwhile, Russia continues to treat the High North as a central pillar of its strategic posture. The Kola Peninsula hosts a significant concentration of Russia’s sea-based nuclear deterrent, making the region critical to Moscow’s military planning. Russia’s Northern Fleet is undergoing sustained modernisation, and submarine activity in the wider North Atlantic has become increasingly frequent.

For the United Kingdom, this is not an abstract concern. The Royal Navy has reported a significant increase in Russian vessels operating near UK waters in recent years. Moscow’s ambitions in the Arctic extend beyond military considerations as well. Control over emerging shipping routes and resource extraction is seen as both an economic and strategic prize.

Recent geopolitical developments have only reinforced the Arctic’s importance. Russia’s invasion of Ukraine has fundamentally reshaped European security. In response, Finland and Sweden made the historic decision to join NATO, concluding that neutrality could no longer guarantee their security. As a result, every Arctic state except Russia now sits within the NATO alliance.

This strengthens NATO’s strategic position but also expands the alliance’s responsibilities across the region.

Greenland represents another emerging focus. Interest in the island’s strategic location, critical minerals and economic vulnerabilities has grown in recent years. Maintaining stability in this part of the Arctic requires close cooperation with Denmark and Greenland’s authorities, ensuring that sovereignty is respected and that malign influence operations are resisted.

NATO is beginning to adapt to this new reality. Initiatives such as Arctic Sentry aim to strengthen coordination and awareness across the region, particularly in maritime, air and undersea domains. Equally vital is the Greenland–Iceland–UK gap, a strategic corridor through which Russian submarines must pass to reach the wider Atlantic.

Protecting this chokepoint is essential to maintaining control of the North Atlantic and safeguarding the reinforcement routes that NATO would rely on in any future crisis.

The UK also plays a leading role through the Joint Expeditionary Force, a coalition of northern European partners designed to respond rapidly to emerging threats. Its agility and regional focus make it a valuable complement to NATO’s broader structures.

However, strategy alone is not enough. Deterrence depends on credible capability. That means ships, aircraft, sensors, munitions and trained personnel ready to operate in some of the world’s most demanding conditions. It also means ensuring that new capabilities arrive before older ones leave service.

The First Sea Lord has warned that the advantage Britain and its allies have long enjoyed in the Atlantic is no longer guaranteed. As older vessels are retired and new classes of ships are introduced, maintaining operational capacity during the transition is vital.

Ultimately, Britain faces a clear choice. We can treat the High North as a niche theatre and hope the strategic balance holds. Or we can recognise it for what it has become: a critical test of our seriousness as a North Atlantic power.

Credible deterrence rests on credible capability — and credible capability requires sustained investment and strategic clarity. The Arctic may be far from Westminster, but the decisions made about it will shape the security of the United Kingdom for decades to come.