When I've asked people involved in the Afghan endeavour the following question I have not received a compelling reply:

Which is the greatest threat to the long-term security of the Afghan government/nation:

a. the insurgency in the south of the country, or
b. illicit narcotics?

I suggest this question is important as the international CN and COIN efforts overlap and can conflict. If the answer is 'a', then the CN campaign should sit within a broader COIN strategy; if the answer is 'b', then the COIN campaign should accord with a larger CN strategy. Which one sets the context for the other?