There are many on this thread who assume that further successful...

There are many on this thread who assume that further successful incursions by the UAF into Russia will bring down the Putin Regime or even the Russian State.

The premise that there have been any successful incursions by the UAF into Russia is false. The casualty exchange rate in the Kursk region favours Russia according to analysts.

Regarding the potential use by Russia of tactical nukes: it's always been taken for granted that if pushed into a corner Russia would likely drop some tactical nukes in Ukraine. Given that the chances of this happening are now even less likely, I think we're safe.