The article determines how much money Russia needs to have in reserve to keep its currency stable. By studying how the exchange rate affects different parts of the economy, they found that Russia has enough reserves to handle a big financial crisis if they act quickly. But if they wait too long, they might have to sell a lot of foreign assets. To be safer, Russia should have more easily accessible money in foreign banks with good credit. Overall, Russia's current reserves are enough to handle major currency problems and keep the economy strong.