MOSCOW (Reuters) - Russia's anti-drug tsar said on Monday a UN campaign to curb the illegal production of heroin in Afghanistan was useless and had no chance of succeeding. The world's largest per capita heroin consumer, Russia is struggling to contain a crippling heroin crisis. With up to 3 million addicts, it is now facing an HIV/AIDS epidemic that is spreading among drug users from dirty needles. "The (UN) plan for Afghanistan has proven to be stillborn from the start and has no prospects," Viktor Ivanov told a meeting of the Federal Drug Control Service, which he heads, Interfax news agency reported. The UN Office on Drugs and Crime (UNODC) three years ago proposed a wide-ranging strategy to tackle Afghan heroin production and trade. Goals included increasing the number of opium-free provinces, securing Central Asian borders and improving security around the Caspian Sea. Ivanov said this strategy has proven "utterly unviable" and that the focus should be on "fully eliminating Afghan drug production". According to the United Nations, just over a fifth of the 375 tonnes of heroin coming from top producer Afghanistan now finds its way through ex-Soviet Central Asia to Russia. Russia has come under sharp criticism from both international and local health groups that say it should do a better job fighting drug addiction at home, including by legalising the heroin substitute methadone.