A massive seizure of the drug Captagon in Italy has revealed the scale of illegal drug production in Syria.

It is the largest haul ever seized, with a street value of more than $1bn (£900m) in Captagon pills. It was followed by smaller drug raids across the Middle East, in what appears to be a co-ordinated effort against the lucrative narcotics trade likely run by the Syrian regime and its allies.

I accompanied the BBC’s Middle East correspondent Quentin Sommerville on exclusive access to the drugs’ journey to an incinerator.

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