9 July 2026

NATO’s three-front problem

International Institute for Strategic Studies  |  Ruben Stewart

NATO’s regional defence plans divide Europe into three operational fronts, but the emerging architecture exposes critical vulnerabilities in command seams, rear-area sustainment, and the availability of enabling forces. These functional problems threaten the Alliance's ability to convert newly established headquarters into effective warfighting formations during a crisis. Approved at the 2023 Vilnius summit, this geographic division establishes Joint Operations Areas across the Northwest, Centre, and Southeast to counter Russian threats.

However, operational seams between multinational corps commands, such as the boundary in the shallow Baltic sector, complicate rear-area security and transit coordination. Furthermore, European armies face severe resource constraints and remain heavily dependent on United States enablers, including deep fires, air defence, and logistics. While initiatives like the European Long-range Strike Approach aim to build alternative capabilities, a potential drawdown of American forces risks exposing immediate platform shortfalls. Ultimately, the Alliance must rapidly generate these organic enabling layers and resolve cross-boundary sustainment friction to ensure a coherent multi-front defence.

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