Financial disruption may be an effective weapon, but I prefer the KISS principle.
That doesn't mean I believe the US couldn't have introduced a plant disease, it only means that plant diseases, particularly fungal diseases, happen--usually because the spores are already around and the conditions are right for them to grow and multiply. Every backyard farmer knows that.
Once the spores are in the ground, the farmer only has a few choices--the most assured one being to take off the top soil and replace it with new, preferably irradiated, top soil.
So I hope what's killing the poppies is a fungal disease.
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Tomorrow's just your future yesterday. Craig Ferguson