The opium sap from the bulb of the poppy plant is seen in a flowering poppy field
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Afghanistan opium: Record yield from poppy fields

13 November 2013 Last updated at 15:39 GMT

Afghan opium cultivation has reached record levels, with more than 200,000 hectares planted with the poppy, according to the United Nations.

An increase of 36% in the past year means supply now outstrips demand despite efforts to stamp out its harvesting.

David Loyn reports from the border between Afghanistan and Iran.