"Afghans know that corruption is eating at the fabric of their society, " said UNODC regional representative Jean-Luc Lemahieu.

BBC: Afghanistan bribery cost 'increases sharply'

But, says Jean-Luc Lemahieu, head of the UN's Office on Drugs and Crime (UNODC) in Kabul, time is something Afghanistan does not have.

CNN: Afghan junkies risk triggering AIDS explosion

"Traditionally, what we tend to argue is that the demand causes the supply, " says Jean-Luc Lemahieu, regional representative of the UN drugs agency UNODC - one of the few organisations working on drug eradication in Afghanistan.

BBC: Afghanistan, the drug addiction capital