Answer:
I believe the answer is no.
Step-by-step explanation:
My reasoning for this, is the only thing that any war does for Drug Cartels, is make them ramp up production, and increase prices. Also, bans on anything, only ensure that the thing being banned (as we can see with the alcohol ban in America History) will be greatly used. The only thing that can truly decrease the amount of drugs being used, is the people in the population.