Well, if production facilities were identified and someone rolled in and dropped a JDAM on them, and that consistently happened, whenever, wherever, the 'WOD" might be effective.
But allow corruption to creep in, (and I'm pretty sure that, despite very real efforts by many, there is some at high levels controlling competition by creative mission tasking), and the whole thing fails to achieve its objective: limiting or eliminating the flow of illegal drugs into the US.
The place to start isn't on foreign shores, it's identifying who here is benefiting from the trade.