Trade with the USSR was very difficult. There was no use for it outside the USSR and it was forbidden to leave the country. So you couldn't just buy things from other countries.
When pepsi started selling in the USSR they traded pepsi for Stolichnaya vodka. Enentually they traded old military equipment. [0]
When pepsi started selling in the USSR they traded pepsi for Stolichnaya vodka. Enentually they traded old military equipment. [0]
[0] https://www.atlasobscura.com/articles/soviet-union-pepsi-shi...