The UN is to warn in a new report that there is a surge in illegal opium being smuggled from Afghanistan into Pakistan and Iran.
Iran has waged a 30 year campaign against the trade which has cost thousands of lives, but the US and EU are now threatening to cut off funding for the operations uranium enrichment is halted.
Al Jazeera’s Nazanine Moshiri reports on the battle between police and drug smugglers along the remote frontier.