If the current Russian administration considers that the sanctions imposed by countries of the world due to Russia's invasion of Ukraine are meaningless, then Russia is also saying by the same token that it considers those countries as meaningless.
Let us not forget that Russia invaded another sovereign country using military force and weaponry that has resulted in the widespread deaths and displacement of civilians.
No threats were made against Russia by Ukraine.
Russia has long been administered by succeeding rogue administrations that cannot by any stretch of the imagination be viewed as the wishes of the general population of Russia.
The current administration should be viewed as no different to Hitler and his Gestapo.