Who is the biggest drug dealer in the world? The Cartels of Cali and Medellin? A Yakuza? The Cosa Nostra? Aecio Neves?
It appears that the main central organizing force of international drug trafficking is, in fact, the CIA, the main intelligence agency of the US government.
The connections between American intelligence and organized crime began during World War II, at the time of ONI and OSS, before the very creation of the CIA.
At that time, Italian Mafia bosses had been arrested by Mussolini's government, and American intelligence had fired their contacts with figures such as Lucky Luciano, Frank Costello, and other Italian-American mob bosses to acquire strategic intelligence on the operations of the Italian government.
With the conquest of Sicily by the Allies in 1944, the American army freed all Italian mafiosi prisoners, and under the guidance of the OSS, the great leaders were put in charge of Italian civil society, and openly, out of the shadows.
With the end of the war, the newly created CIA begins to finance the Sicilian and Corsican families to help them compete with the unions (mostly socialist) control of the docks. This ensured the flow of international heroin trafficking in the 1940s.
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https://www.sott.net/article/373570-CIA-The-largest-criminal-organization-in-the-world