Thanks for the details on the wheat sales in helping to collapse the Soviet economy. I remember taking classes on the socialist economic theory in college during this period. Those theories an their philosophies never fit with the reality and always required an external capitalist “enemy” to sponge off of for resources as well as an internal black market/private/capitalist/underground economy to feed their citizens.
You can extrapolate that further: “No socialist system can survive unless it has support from outside the system. Even then, its demands for resources will continue to grow, and the services it provides will continue to decline, until it consumes everything and does nothing.”
One example is socialist Sweden, where the cost of their welfare state was paid for by high taxes on their arms industry which was outside the system. Finally, PM Olaf Palme decided to kill the goose that laid the golden eggs, by nationalizing the arms industry. He was assassinated shortly after that, likely at the behest of the gods of economics.