If there is one thing that is destroying our world, one step at a time, it has to be drug trafficking without a doubt. The problem with drug trafficking is that it involves way too many people who are silent partners and investors that assume no responsibility for the damages caused by their enterprise.
There is no way of knowing who and how, but there is also no way to deny that those who deal the drugs are getting financed to purchase them and move them around. And I mean financing by some of the biggest names in business, government, and banking.
The only way to eradicate drug trafficking is to get to the source; the people who invest the capital to move drugs around and that is going to be extremely difficult to achieve.