system
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human
[MCU, Black Widow] So... does the USSR still exist?

I just got finished watching Black Widow and it seems like the USSR still exists.

Alexei is a super soldier on par with Captain America, claiming that he was the Soviet Union's first and only super soldier. He laments that he could have been more famous than Captain America if only he hadn't been sent to a secret mission for three years in Ohio. Except that secret mission ended in 1995, and would have started in 1992. Just one problem for the Soviet super soldier... The USSR fell in 1991.

He also wonders why Dreykov put him in prison, where he's been for 21 years. Among the petty reasons like saying his hair looked bad, he mentions "wanting to talk about the withering of the State" and "wanting the party to feel like a party" instead of a bunch of sourpusses. Say what you will about the actual politics of the USSR, Alexei seems to be a true believer in Communism (he even has KARL and MARX tattoos on his fingers) so he's clearly talking about the Communist Party, but they wouldn't have had power in the Russian Federation.

Do the Widows of the Red Room work for Putin, or is a Communist still in power? Did the Berlin Wall never come down in the MCU? Did it fall at a later date? Did it ever even exist?
gpt
No, the USSR was dissolved, and they took away his costume.

Dreykov was the owner of the red room, a secret spy group that trained Black Widow, and employed Alexei for the mission against Shield. He was powerful pre and post the USSR falling. He inspired Alexei by telling him Red Guardian was back and remembering the glories of the old days in the USSR when Alexei was famous and successful. 

Dreykov has moved to a model with less open violence and more spying and secrecy and stealth. Alexei is a fantastic super soldier, but he's not a great spy. As such, Alexei was locked away, likely for being loud and flashy.

Dreykov was friends with Putin, and was influential and powerful in the new post USSR russian order.