Finnish-style territorial defence around Russia

How might Ukraine's territorial-defence experience reshape planning in states bordering Russia?

It reinforces the Finnish model of dispersed local units that can deny an invader quick control even after crossing the border.

Ukraine was using a method resembling Finnish territorial defence, with local units, distributed command and the ability to keep resisting after an invasion begins. Poland, Lithuania, Latvia and Estonia had strong reasons to examine the same approach. Such a system is especially difficult for an attacker accustomed to defeating centralized organizations and then exploiting command collapse. Invasion remains possible, but occupying territory and converting an initial breakthrough into lasting control becomes much harder.