Laila Haidari set up Kabul's first independent drug rehabilitation centre in 2010. Having helped her own brother to quit his heroin addiction she wanted to help others. More than 80% of the world's illegal opium and heroin comes from Afghanistan. International criminal groups have exploited years of warfare and lawlessness to expand production, but the insecurity has also led to poverty and increased drug addiction inside Afghanistan. Laila Haidari explains to Rebecca Kesby how local people have been affected.

(PHOTO: An Afghan farmer harvests opium sap from a poppy field in the Surkh Rod district of Nangarhar province in 2018. The US government has spent billions of dollars on a war to eliminate drugs from Afghanistan, but the country still remains the world's top opium producer. (Credit NOORULLAH SHIRZADA/AFP via Getty Images)