Napalm and MOAB the poppy fields!!!
Where do you think the base material for all this comes from? Afghanistan! They have been a major source of opium for pharmacuetical pain killers for many years and will continue to be so.
And yes they sell tons of the stuff on the black market because of the constant demand for non-pharmaceutical opiates.
You can napalm all you want but as long as that demand is there dirt poor flower farmers will continue to grow and harvest poppies.