Russia (I assume this is what you mean) didn't go "alt right". They likely spend a lot of resources encouraging right wing politics in all countries they benefit from weakening the stability of. It's no surprise they had a hand in helping Trump, brexit, Bolsonaro, NRA. Just look at who they supported in a massive disinformation campaign in Poland, a leader of the ultra-nationalist, neo-fascist "All-Polish Youth".
To anyone in general, not OP: inb4 any whataboutuism about US meddling in the world. It's a separate matter. Two things can be shit at the same time.
I've resisted right up until this moment embracing this viewpoint, but I think we really have reached a point where every one of the old labels has lost all utility. We're just sort of passing around paper mache cargo cult effigies of things our grandparents took for granted and didn't bother to preserve for us.