This is unconstructive and an unwelcome distraction this late in the game. Russia's demands are irrelevant and shouldn't factor into efforts for reaching a deal. This agreement is about America's national security interests, as well as Russia's, by ensuring that Iran doesn't have the capacity to develop nuclear weapons.
Russia is one of the negotiating parties and its requests must be received and fairly considered. Iran's peaceful cooperation with all parties shouldn't be limited by sanctions imposed without even UN approval. Russia and Iran have the right to trade, investment, and military-technical cooperation unhindered by the West.
While the world is focused on the Ukrainian invasion, President Biden is working alongside Russia to enter back into this bad deal which in fact increases Iran's nuclear capabilities and threatens America's national security – not the opposite.