How Europe Is Secretly Rearming for a Post-NATO World — The Classified Plans That Leaked

European governments have prepared classified contingency plans for a world without US NATO participation. Leaked details reveal what they actually contain.

European government officials have been drafting and revising classified contingency plans for a European security architecture that doesn't depend on guaranteed US NATO participation since at least mid-2025, and Trump's April 2026 statement that he is 'absolutely considering' withdrawing from NATO has accelerated the pace and scope of this planning activity.

The specific leaked details — reported by Der Spiegel, The Guardian, and Le Monde from what appear to be coordinated briefings from officials in multiple European governments — describe planning documents that cover three scenarios: partial US commitment (reduced troop presence but maintained Article 5 guarantee), conditional US commitment (maintained presence contingent on European defence spending targets), and full US withdrawal (the contingency that previous administrations considered too politically costly to plan for explicitly).

For the full withdrawal scenario, the planning documents apparently describe a specific transition period of 3-5 years during which European conventional deterrence capacity would need to reach a level that provides credible deterrence against Russian conventional military force without the specific US capabilities that currently underpin that deterrence.

The military requirements identified in the planning: long-range precision strike capacity independent of US-supplied systems; cyber warfare capability at the nation-state level; space-based intelligence and communications resilience; and the specific command and control infrastructure that allows combined European operations without US architecture.

For the nuclear dimension: the planning documents apparently address the specific question of whether France's nuclear deterrent can be structured as a European deterrent through formal treaty arrangements whose political feasibility is being actively discussed at head-of-government level. This is not a new conversation — Macron has raised it repeatedly since 2019 — but its urgency has reached a specific level that the classified planning reflects.

For the public communication challenge: European leaders cannot publicly announce that they are planning for a post-NATO security architecture without triggering the specific US reaction that would make US withdrawal more rather than less likely. The planning is happening in the diplomatic equivalent of the dark.