Cultivation of opium poppies, the plant used to manufacture heroin, has dropped by 19 per cent year-on-year, according to a UN survey released on Wednesday.

Afghanistan has provided the majority of the world’s opium production since the early 1990s, and last year it rose to a record level, the United Nations Office on Drugs and Crime (UNODC) said.

But after six years on the rise, the agency figures released for 2015 show a sharp fall.

Matthew Wells spoke to the UNODC’s Angela Me, chief of research and analysis, and asked her to explain the latest figures.

Duration: 2’42”