Market forces - supply and demand - will establish production rates. Momentary blips are efforts at some entity attempting to influence market forces.
Start with that idea.
Then explain how motives for war could possibly encompass "increasing or decreasing opium production."
It's a good slap at the USA, but it's totally illogical.
Heroine is not a milk, start with that idea.
Market forces are establishing production rates only if there is no external regulation of supply and demand. Heroine industry is not a free market, otherwise heroine would be cheaper than citric acid.