I would consider the fascist nation as one whose external colonies are insufficient so to maintain its Herrenvolk Democracy so it turns the tools of imperialism inwards to then kickstart the engine of being able to colonise further land, resources and peoples outside of its nominal borders.
However, by the time of the 21st century the "fascist nation" is redundant - liberal democracies have got so good at using the tools of fascism within their frameworks that the distinction between fascism and liberalism outside of nominal electoralism largely only matters whether is one is a beneficiery of such a Herrenvolk Democracy or its victim.
I am not a fan of pigeonholing proleterian=good non-proleterian=bad because it obfuscates one of the profound discoveries of marxism and devolves it into workerism, which can be reactionary and easy class calloborator with petty bourgeoisie and bourgeoisie fascists. One of the profound discovery of marxism is this: under capitalism the labour is already socialised but it is the surplus value that is privatised, as Stalin put it there is a mismatch between the forces of production and relations of production and a socialist state helps accelerate the correction of that mismatch.
Plekhanov was right to a degree about stagism but Lenin superceded him because the latter correctly understood that Plekhanov's paradigm was too mechanistic and passive in its approach; a dictatorship against capital would help accelerate the timeline towards communism.
Circling back to Russia, I therefore have no use for the proleterian-nation-theory that was mentioned to explain imperialism; it strips anything meaningful to be understood and then actioned in the concrete world. We don't need to force a triangle to fit in a square hole.
Russia, following the dissolution of the Soviet Union, tried its hardest to join the Western imperialist order and was roundly rejected - there is no more of the world that the US and its vassal statez are happy to share - they want Russia for themselves. Putin, with his Tsarist sympathies, stumbled into aligning with anti-imperialist block because there was no other mode of survival for Russia as a nation. The autodynamism that produced this sovereignity was because of the legacy holdover from the Soviet Union, backed by the socialist fortress that is China.
(By the way, I have not tried even a little bit to simplify what I am saying for translation as I figured AI translation has got good enough that it should be fine. But if anything I said needs clarifying then please let me know. Thanks for sticking with me so far!)