European Security at a Crossroads: Diverging Threats, Military Realities, and NATO 2026

As the rules-based order erodes and transatlantic ties strain, European states approach the NATO summit in Ankara of July 2026 burdened by fragmented threat perceptions and severe deficits in industrial scale and military manpower. This report asks a single question: what do European states fear in a fragile global system, how are those fears shaped along geographical fault lines, and how far do national military responses match them once economic weight and industrial capacity are taken into account. Working from a corpus of post-2022 national security and military and defence strategy documents, read wherever possible in their original languages and supplemented by official statements, the report converts declared threats and capability commitments into data and visualizes them. It finds that the apparent continental consensus on Russia dissolves, on closer reading, into three sub-regional security complexes: a Russia-focused East, a societal and transnational South preoccupied with migration and instability, and a broad-spectrum group of larger powers. Translated into force structure, these perceptions are constrained less by fear than by capacity, dividing the continent between full-spectrum ambition, whole-of-society total defence, and niche specialization. At the level of architecture, procurement patterns and the limits of the Franco-British nuclear pairing point not to full strategic autonomy but to a managed reduction of dependence on the United States. Europe’s central task before Ankara is to convert this fragmented threat matrix into a coherent strategic vision.