Here are the origins of the cocaine scandal:
Russia needs money to fund all the marginal, divisive parties in Europe and pay all the trolls and provocateurs that stoke passions there and in the US. But where is the money supposed to come from? The country’s economy is pathetically weak and oil-dependent.
So Russian diplomats reach out to drug cartels in Latin American countries and help them move enormous quantities of product. And that’s how they make the money to pay for their propaganda.
That’s all there is to it.