At a moment when the architecture of the global economy faces simultaneous strain from resurgent geopolitical rivalries and the accelerating pace of technological transformation, central banks find themselves navigating terrain that their traditional frameworks were never designed to chart. It was precisely this challenge that Bank for International Settlements-affiliated policymaker Olli Rehn, Governor of the Bank of Finland, placed at the centre of his address to the Centre for European Policy Studies Macro group webinar, delivered from Helsinki on 20 October 2026.
The speech, subsequently published in the BIS Speeches series on 27 October 2026, arrives at a particularly charged juncture in the history of monetary policymaking. Central banks across the developed world, having spent the better part of the post-pandemic era aggressively tightening financial conditions to subdue inflation, now face a new and arguably more complex environment — one in which the sources of economic volatility are less cyclical and more structural in character. Rehn's choice to address these twin pressures in a single, unified analytical framework reflects a broader recognition within central banking circles that geopolitical disruption and technological change are no longer peripheral risk factors but central determinants of price stability and economic output.
Geopolitics as a Monetary Policy Variable
For much of the post-Cold War era, central bank models were built on assumptions of relative geopolitical stability — open trade, integrated supply chains, and a broadly rules-based international financial order. That architecture has fracked considerably in recent years. Fragmentation of trade relationships, the weaponisation of financial infrastructure, and the re-emergence of strategic competition between major economic blocs have introduced persistent inflationary pressures that sit outside the traditional transmission mechanisms through which monetary policy operates. A central bank raising or lowering its policy rate cannot, by itself, resolve a disrupted semiconductor supply chain or redirect the energy market consequences of a geopolitical rupture. What it can do — and what figures like Rehn have argued it must do more precisely — is calibrate its response to distinguish between demand-driven and supply-driven inflationary episodes, applying stimulus or restraint with far greater nuance than blunt rate adjustments typically allow.
This distinction matters enormously. Misidentifying the source of inflationary pressure risks compounding the underlying economic damage. Tightening aggressively in response to a supply shock, for example, can suppress demand and employment without meaningfully addressing the structural bottleneck driving prices higher. Finnish and broader European monetary tradition, informed in part by the Bundesbank legacy that shaped the European Central Bank's foundational culture, has long been cautious on exactly this point — preferring deliberate, evidence-based adjustments over reactive policy lurches.
The Technological Disruption Dimension
Equally formidable is the challenge posed by technological disruption. Artificial intelligence, digitalisation of financial services, and the emergence of new payment architectures — from tokenised assets to central bank digital currencies — are reshaping the transmission of monetary policy in ways that are only beginning to be understood. The velocity of money, the behaviour of credit markets, and the competitive dynamics of the banking sector are all in flux as technology penetrates further into the fabric of financial intermediation. For a policymaker of Rehn's generation and institutional standing, acknowledging these forces publicly at a venue as prominent as the CEPS Macro group is itself a signal — an indication that central banks no longer have the luxury of treating fintech and digital-asset innovation as matters solely for supervisory or regulatory departments to manage. These are, increasingly, monetary policy questions in their own right.
The intersection of the two forces — geopolitical tension and technological disruption — creates compound risks that are particularly difficult to model. Cybersecurity vulnerabilities in critical financial infrastructure, for instance, carry implications that span both domains simultaneously. The digital fragmentation of the global financial system, sometimes described as the emergence of competing monetary blocs each with their own digital payment rails, directly echoes the broader geopolitical decoupling observed in trade and strategic policy. Central banks sitting at the heart of this system, as the Bank of Finland does within the Eurosystem, must think simultaneously as monetary authorities, financial stability guardians, and strategic institutional actors in an era of contested international economic order.
What This Means for Monetary Policy's Future
Rehn's Helsinki address, modest in its public profile as a webinar intervention, carries outsized significance as a diagnostic of where serious central banking thought currently stands. The fact that a senior Eurosystem governor chose to frame the challenge explicitly around geopolitics and technology — rather than the more familiar lexicon of output gaps, neutral rates, and inflation expectations — suggests that the conceptual vocabulary of monetary policy is itself evolving. Institutions that fail to integrate these structural forces into their analytical and operational frameworks risk becoming reactive rather than anticipatory, managing consequences rather than shaping conditions.
For the financial sector broadly — banks recalibrating their treasury operations, asset managers reassessing duration risk, technology firms embedded in payment infrastructure — the message from Helsinki is clear: the era of stable, predictable monetary policy anchored in well-understood macro conditions has given way to something considerably more demanding. Navigating that complexity will require not just technical sophistication but strategic vision of the kind that Rehn's address, in its very framing of the problem, sets out to model.
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