Russia has urged US-led forces in Afghanistan to crack down harder on drug production there, and offered to help put a security "ring" round the country.
Russian Deputy Prime Minister Sergei Ivanov said in Singapore the international community should classify Afghan drugs as a threat to international peace and security.
Ivanov told an Asia-Pacific security summit hosted by the London-based International Institute of Strategic Studies that insurgents and international mafia groups were earning billions from Afghan drugs.
Afghanistan supplies 90% of the world's opium, the main ingredient in heroin.
The UN says the Taliban earn about 300 million dollars (£207.5 million) a year from the opium trade.