They’ve been held at bay for over a year by a smaller army with at best 20+ year old “B stock” conventional munitions often Jerry rigged to give half the capabilities they have when used as intended. Russia is a paper tiger who would get the Iraq revolutionary guards treatment inside 3 weeks if they start shit against the finns. And nobody outside Putin himself is suicidal enough to start throwing nukes.
What is this, non credible defense? If you believe that, then nothing matters and all options are on the table including preemptive action, because you either assume that MAD is enough to stave off that stupidity or you dont. But…this is all bullshit propaganda and saber rattling so who really cares.