The Federal Drug Control Agency said Friday that Moscow should stop the transportation of cargo across its territory to U.S.-led forces in Afghanistan if they do not do more to cut the flow of heroin to Russia.

"The granting of transport corridors to NATO forces in Afghanistan should be conditioned on a commitment to destroy sown areas, laboratories, stocks and other infrastructure of the Afghan drug business," agency head Viktor Ivanov told a meeting of ministers and lawmakers.

"This would ... start the real process of improving the drug situation in Russia as well as in Central Asian and European countries," he said.

Earlier this year, Russia and its allies in Central Asia established a transit route for nonlethal supplies to the international forces in Afghanistan to complement a dangerous route via Pakistan.

Citing United Nations data, Ivanov said Afghanistan's output of opiates had grown more than 40-fold since 2001, when the U.S.-led coalition launched its assault on the Taliban. He said the 2008 raw opium crop topped 7,000 tons.

The U.S. envoy for Afghanistan, Richard Holbrooke, said Saturday that Washington was shifting its strategy against Afghanistan's drug trade, phasing out funding for opium eradication while boosting efforts to fight trafficking and promote alternate crops.