Europe Faces Security Reckoning as US Military Commitment Wavers

The 2025 CSIS report, "How Europe can Defend Itself with Less America," warns that Russia could be capable of launching a regional offensive against the Baltic states within five years. Without the presence of US air, naval, and ground forces, European militaries currently lack the sustained munitions and frontline capacity to counter a Russian strategy of attrition. Currently, the US maintains 80,000 troops across the continent, alongside critical air assets at Ramstein and naval deterrence on the eastern flank.

Beyond simple troop numbers, Ruben Stewart of the International Institute for Strategic Studies notes that NATO’s true strength lies in American "operating systems"—the complex intelligence, surveillance, and reconnaissance networks that allow fragmented European militaries to function as a unified force. Without this connective framework, European states struggle to achieve the rapid consensus required for modern, high-stakes military operations.

While the European Plan for Defense Readiness aims to integrate national capacities into a supranational framework by 2030, progress remains hampered by bureaucratic stagnation and the difficulty of aligning diverse political interests. Programs like the Eurodrone initiative attempt to domesticate arms procurement, yet they currently lack the scale to replace American capabilities. As the threat of a potential Russian spillover grows, the continent faces a stark choice: overcome internal divisions to build a truly autonomous defense, or remain tethered to the increasingly volatile commitments of an unpredictable Washington.