A UN is to warn in a new report that there is a surge in illegal opium being smuggled from Afghanistan into Pakistan and Iran. Thousands of Iranian forces have died in the 30 year campaign against the narcotics trade. But the US and the European Union are now threatening to cut off crucial funding for those operations unless Iran halts uranium enrichment.Al Jazeera's Nazanine Moshiri reports on the battle between police and drug smugglers from the
Iran-Afghan border.