This is a weird situation.
If the license is changed it's no longer AGPL, it's a unique license.
If the license has restrictions then the copyright is violated by not adhering to the license.
The above makes it sound like both parties want to have it both ways.
I would just give the Russians proper attribution but the European governments hate Russia so much that they couldn't possibly do that. This is a problem with having governments run open source projects.
In the en it's probably going to be like Russian gas which they sanction except for not freezing to death in the winter, when they just look the other way and stay alive to hate the Russians another day.
The whole damn thing stems from some royal cousins hating each other in the 1830's. America was designed to "eff that noise" but every stupid American politician wants to act like a European so Americans get dragged into their stupid wars and other zero-sum games.
Open Source software is supposed to be a non-zero-sum game and the licenses are supposed to create the conditions for that. Maybe FSF should consider a v4 to improve the situation. Anybody seen Eben Moglen lately? Last I heard some whackadoodles at FSF were mad at him. Maybe a post-FSF license is needed.
"Play nice, children."