You're the one who has been trying to state that Russia wasn't part of the USSR as if Russia is a different country geographically compared to Russia that was the USSR.
Straight from Wiki as it seems the source of history your most familiar with and like to refer to.
USSR - "It was governed as a single-party state by the Communist Party with Moscow as its capital. A union of multiple subnational Soviet republics, its government and economy were highly centralized."
It seems that needs to be underlined as you are completely ignoring fact that USSR was centralised controlled by Moscow - Russia.
Moscow (Russia) was the central control of the USSR. It was Russia that US defeated in the Cold War, all of the republics quickly folded once that happened and left Russia's central control as soon as they could, fact.
Also a fact that the Russian government didn't expect all of the republic to fold as fast as they did and abandon Moscow.
