Article 6 states: "Any State Party to this convention which finds that any other state party is acting in breach of obligations..." "Such a complaint should include all possible evidence confirming its validity".
Russia has proof the United States breached their obligations and they are about to prove it to the world.
https://front.un-arm.org/wp-content/uploads/2020/12/BWC-text-English-1.pdf
Yeah I'm going to put my chips on whatever will piss off the most people.
My bet is that they won't agree to meet to address it.