Around the world attitudes towards the use of cannabis are shifting.

Mexico’s new government plans to legalise recreational cannabis use, as does the incoming government of Luxembourg. Meanwhile, New Zealand’s leaders are considering a referendum on what their approach should be.

As public opinion – and that of governments – changes, it seems increasingly likely that other countries will follow, raising questions about how they work together to manage the use and supply of cannabis.

What has led one country after another to move towards a relaxation of their laws and, in many cases, outright legalisation?

– Read the entire article at BBC News.