Will Europe sustain rearmament after Russia's invasion of Ukraine?

Will Europe genuinely rearm after Russia's invasion of Ukraine, or will the response remain mostly talk?

The will exists, but sustained commitment will only be clear over five to ten years; Poland is already rearming.

The immediate political will to react is visible. The unresolved question is whether countries sustain the energy, money, and commitment needed to rebuild forces. The result should be judged over five to ten years rather than from early declarations. Poland is the clearest exception because its rearmament was already underway. The answer separates emergency rhetoric from the long institutional work of defence expansion.