From Der Spiegel

Since the fall of the Taliban regime almost seven years ago, the country's opium harvest has been more abundant in almost each successive year. Last year, 93 percent of the heroin traded in the world came from Afghanistan. In 2007, opium poppies were grown on 193,000 hectares (476,900 acres), a 17-percent increase over the previous year. Meanwhile, ISAF looks on without taking any action. But its inaction is a precautionary measure.

For fear of triggering hostility against foreign troops among the local population, the powers that be agreed early on that the Afghans would have sole responsibility for waging the drug war, with no NATO involvement whatsoever. To demonstrate their supposed commitment, the police and Afghan army occasionally stage symbolic drug burnings, and sometimes they even wade into the fields to decapitate a few plants. The operation, dubbed "eradication," is one of the most dangerous in this war.
"We assume that 500,000 families have their fingers in the pie," says General Mohammed Daoud, once a young commander under the legendary mujahedeen leader Ahmed Shah Massoud. Today Daoud is the deputy interior minister in charge of running Kabul's anti-drug operation. "And if you consider that an Afghan family has at least six members," says Daoud, "you have 3 million people in our country whose livelihood depends on opium production." This contingent, one-tenth of the country's total population of 30 million, is much larger than any army in Afghanistan.