Secretary of State Marco Rubio offered what may be the clearest articulation yet of the Trump administration’s transactional NATO doctrine — and its implicit breaking point. Speaking publicly, Rubio reframed the alliance’s foundational logic: the United States didn’t join NATO merely to serve as Europe’s security guarantor. It joined, in part, because a permanent military footprint on European soil advances American strategic interests — forward deterrence, power projection, logistical depth. The bases in Germany, Italy, the United Kingdom, and elsewhere are not charity.

The current state of European defense infrastructure is the result of a decades-long “peace dividend” that has effectively hollowed out the continent’s military capabilities. Following the Cold War, most European nations systematically dismantled their armed forces, reducing troop numbers, decommissioning heavy armor, and allowing domestic ammunition production to atrophy. Despite the clear warning of 2014, the response from European capitals was largely performative, characterized by a continued refusal to meet basic NATO spending targets or modernize aging stockpiles.