The simplest and safest way to thwart an enemy’s ability to conduct war is to destroy their supply lines. This is an old and useful tactic from the time of King Nebuchadnezzar II (605-562) of Babylon. His armies would surround their hapless victims who had taken refuge in forts, cut off all supplies, including water and food, until famine weakened their army, and then attack. This is a brutal but effective military ploy. We have been in Afghanistan for eight years—and neither the Bush administration nor the Obama administration has effectively utilized this strategy.

The solution to winning the war in Afghanistan is to destroy the Taliban’s ability to make war, causing the decimation of the Taliban war machine. The Taliban’s supply lines are the poppy fields. Eliminating those fields as a source of income would strike a fatal blow to the Taliban.

The Taliban are mafia drug-lords wrapped in Middle-Eastern freedom-fighter apparel. They generate $100 to $150 million annually by imposing “taxes” on opium farmers.Selling and exporting opium raises $700 to $800 million annually for the Taliban.  This allows for the purchase of arms for insurgency, terrorism and black-market tyranny. Worldwide, Afghan heroin fuels 93 percent of a $65 billion trade, far surpassing all of Mexico, Southeast Asia and South America combined. The United Nations estimates between 15 to 21 million people use this highly addictive drug. Afghan heroin alone kills over 100,000 people each year, outweighing the U.S. combat losses of Iraq, Afghanistan, Somalia, Grenada and Vietnam combined.

Our current policy of agricultural transformation allows the cultivation of opium poppies until economic incentives prompt farmers to take up other crops such as pomegranates and grapes. According to the United Nations Office on Drugs and Crime 2009 Annual Report, opium production has doubled under U.S. occupation and is so bountiful that the Taliban has reportedly stored 12,000 tons of opium, which can supply the entire world for three years. We need a new plan.

If the poppy fields in Afghanistan were eradicated, this would annihilate the Taliban’s primary source of funding. This in turn would eliminate their ability to corrupt the Karzi government, buy arms, cause terror, protect al-Qaeda and buy foreign influence. It is the single, clearest solution and would end the havoc in southern Afghanistan and northern Pakistan while devastating world heroin trafficking in a matter of weeks. This is a win-win strategy.

Proponents against the eradication of Afghanistan’s poppy fields argue that world demand will only increase production in other areas, making poppy destruction a useless endeavor. “If Afghanistan were suddenly wiped out as a producer of opium—by bad weather or a blight or eradication efforts—other parts of the world would simply emerge as new producers,” said Founding Executive Director of the Drug Policy Alliance Ethan Nadelmann. This assumption, while based on the law of supply and demand, ignores the difficulties associated with expanding any type of production from clearing and preparing new land and setting up irrigation. Moreover, counter-drug operations performed in the United States and elsewhere use crop eradication as a means. Focused on the drug factor alone, Mr. Nadelmann misses the larger point: Destroying Afghan’s poppy fields would bankrupt the Taliban, preventing them from resupplying arms and killing Americans.

Others believe increased Taliban recruitment is the primary objection to field destruction. U.S. Special Representative for Afghanistan and Pakistan Richard Holbrooke and Secretary of Defense Robert Gates are both on record saying that destroying the poppy fields would strengthen the Taliban and that every disenfranchised farmer would become a Taliban recruit. That may be the case with the devastation of one or two fields, but it will not be the case with total destruction of any and all poppy fields.

A counterargument to this is that when the Soviets invaded Afghanistan almost three decades ago, opium production increased in response to increased arms expenditures. This shows that the economic needs of the insurgent army drive production. Moreover, eight-years of permissiveness have allowed the Taliban to strengthen their forces to an all-time high. In fact, 2009 was the highest loss of life for U.S. and NATO forces. Permitting opium production did not eliminate or curb the Taliban. Another point is that when seasonal cultivation ends, the Taliban gains strengths as most of the opium farmers become fighters and take up arms after the harvest.

One of the fiercest arguments against the destruction of Afghanistan poppy fields is that if opium production is eliminated it will destroy the Afghanistan economy. First, no one makes that argument for Mexican drug-dealers or marijuana cultivators in California.  Second, if the crops were removed the Taliban would collapse, Afghanistan would become safe and foreign investment money would flow into that country. More to the point, Afghan farmer’s gross revenues from opium is about $1 billion dollars according to 2007 U.N. estimates, while our 2007 U.S. Military operations cost taxpayers $35 billion. Therefore, the plan should be: burn the fields, crush the Taliban, send the boys home, send one billion in aid and save $34 billion a year.

The U.S. dominates the air in Afghanistan. Poppy fields grow in full sunlight, and forests do not obscure the poppy fields. Eradication efforts will not be hampered by a lack of discovery. Modern herbicides are quite safe and effective, as well as the use of tractors to plow the fields under. When the Afghan farmer is faced with the choice of taking U.S. assistance to grow legal crops or face total eradication of his crops and imprisonment, he will be far more motivated than he currently is to switch his crops.

In the past, the United States did not have the ability to eradicate those fields. Now, we are the occupier of Afghanistan and have the capacity and the duty to destroy this trade. Every poppy that grows empowers the Taliban with more artillery that will be used to kill American soldiers and Marines. No one has more power than Mr. Obama to dispatch the largest source of heroin export in the world. If he really wants get out of Afghanistan and cares about our troops, he must destroy those fields.