US church on frontline of battle against drug known as 'tranq'

America has been fighting the War on Drugs for decades, but the drug cartels, the suppliers and the dealers appear to be always one step ahead of the authorities. While overdose deaths are falling, the potency of the new drugs has recovery workers worried. For some the answer might lie in reducing demand, giving users support and helping them end their addiction. BBC international correspondent Quentin Sommerville and camera journalist Darren Conway travelled to Columbus, Ohio to find out more. Read more on this story: A wave of homemade, synthetic drugs sweeps US and deepens crisis.