TBH, Europe and the West is going to, sooner or later, realise that the only way to "just tell" Putin will be armaments, and quite possibly boots on the ground.
And the less we do now, the more likely that it will be sooner rather than later.
The Silicon Curtain podcast recently had an interesting piece on Russian cultural attitudes, and the notion that "being reasonable" looks to your typical Russian like weakness. And we saw that, with Chechnya, Georgia, the shenanigans in Donbas and Luhansk, and most notably the invasion of Crimea, on all of which occasions the West did precisely nothing substantive. It seems quite likely that our inaction emboldened Putin to push further and further.
I really do think that, if Russia does succeed in rolling over Ukraine, then he's going to have his eye on the Baltics, and possibly even Poland. Quite apart from the ongoing hybrid warfare that has been happening all over the place, and is one of the reasons that Russian narratives are popping up all over the world, particularly in right-wing circles.