The Architecture of Modern Stability: Multipolarity and the “Economic Cage” in the 2020s

This article examines whether contemporary multipolarity is structurally more vulnerable to great-power war than the international systems of the twentieth century. It develops a qualitative comparative historical analysis of four periods: pre-1914 multipolarity, Cold War bipolarity, post-Cold War unipolarity, and contemporary multipolarity in the 2020s. The article argues that present-day multipolarity is not inherently peaceful, but that two structural mechanisms reduce the strategic attractiveness of direct war among major powers. The first is deep global value-chain interdependence, described here as the “Economic Cage.” Unlike many of the commodity and manufactured-good networks that characterised earlier international trade, contemporary production depends heavily on specialised and geographically dispersed inputs, including advanced semiconductor technologies (Jacks, 2024; OECD, 2025 ) The second mechanism is expanded informational visibility produced by commercial satellites, open-source intelligence, and near-real-time monitoring. This visibility does not eliminate uncertainty, deception, or miscalculation, but it makes large-scale military preparation more difficult to conceal and may create additional opportunities for crisis management. The article does not claim that economic interdependence makes great-power war impossible. Instead, it argues that deep production-chain dependence raises the expected economic costs of direct conflict and constrains the range of strategically viable choices available to governments. The article’s novelty lies not in introducing the general claim that interdependence can promote peace, but in combining the depth and technological specificity of global value chains with informational visibility in a comparative framework that distinguishes contemporary multipolarity from the pre-1914 system. By combining these perspectives, the article shows how regional rivalry and economic pressure can continue even when direct war between major powers becomes less strategically attractive.