Maybe, or they might get all of NATO running to attack Russia. China is also currently giving Russia support (while claiming to be neutral, their actions are clearly leaning to support Russia), but is very likely to invade. Nobody wants nuclear weapons used in war again.

Would you and your friends volunteer to run to attack Russia? Hell, most of my friends in Ukraine did not run to defend our country, many ran away to Europe. Now talk about fighting a foreign war..

More practically, the fallout would blow in their direction.

Or, with the wrong weather, nuclear fallout heading towards Moscow.