Ukranians are being told that Russia's special forces,
sappers, have already infiltrated the country. If push
comes to shove their job will be to cause chaos and
disruption in govt/military/civilian operations.
Politicians, infrastructure, supply-lines, they'd
all be targeted at once.

Now whether this is TRUE is unclear - but it's what
the citizens are being told and they're acting
accordingly.

Check out Mama's Big Gun :

https://www.dailymail.co.uk/news/article-10440853/Ukrainian-mother-52-arms-huge-rifle-amid-threat-Russian-invasion.html

She's loaded for "bear".

Citizen's militia/irregulars have been very active in
Ukraine for the past couple of months - training as
hard and well as they can. The plan seems to be a
street-by-street resistance.

Of course Putin can send in a few bombers and there
won't BE any streets ....... HE and thermite will
take care of the urban centers. Blow out all the
windows and then start fires .......

IF Russia is going to invade it will have to be SOON.
Right now the ground is frozen, which makes it very
easy for heavy armor and troops. Wait until spring
and it's all MUD.

And Europe/NATO ... they've realized they can't do shit.
Putin has the key to the natural gas lines and Germany,
and thus downstream clients, CANNOT oppose Russia.
The Germans have finally realized that Putin has them
by the short hairs - no WAY allies can supply enough
gas to keep things running. No TIME to get any
alternatives on-line.

Of course many TOLD them that Nordstream was a TRAP,
but they didn't listen .... idled their oil/gas ops
to please Greta and her crowd, "Just buy it from Russia"
they said .............

My guess ... IF Russia invades, China will move on Taiwan
at the same moment. It'd be too much for the messed-up
West to deal with.

And no, nukes are off the table - they're only in case
Russia shoots nukes at US. They're the weapon you just
can't use. So, it's conventional warfare - and Russia
has spent a couple of decades now pouring money into
armaments while the West sat on its collective fat ass.