For generations, northern Ireland has been no stranger to armed militant groups willing to dispense violence. But whereas those groups once fought over political ideals, now they fight over drug routes and money. Since The Troubles ended and the Good Friday Agreement was signed, the battle-hardened youth of the north have started to put their skillset to use in the drug game. Journalist Adam Doyle breaks down the evolution of northern Ireland's new narco-paramilitaries and the frightening hold they have on their territory. 

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