I AGREE wholeheartedly with David J Crawford in his exhortation to government it should decriminalise cannabis (Letters, May 23).

What did the war on drugs achieve? In the US the prison population has increased by 500 per cent in the last 30 years due almost entirely to drug convictions. In the UK a large number of people now have a criminal record for merely possessing a very small amount of the drug. Vast amounts of money and violence have been the result as the criminal element took control of the supply chain.

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