1. Russia can now justify using tactical nuclear weapons in the annexed regions.
They drop not just 1, but 2, 3 or more 1 kT bombs, evaporating Kraken and the fighting force of the Ukrainian army.
The 300,000 strong Russian mobilization secure the borders to the annexed provinces and the war is essentially over.
Now to the scary part. This will pave the way for China to use their nuclear hypersonic carrier killer missiles inside the 9 dash line. The US decide not to play kamikaze carrier with the CCP and the PLA takes Taiwain to please master Xi.
Then what, WWIII or another long cold war?