David Cameron will today be urged by MPs to start a wide-ranging public debate on drug policy - including the possibility of legalisation.
The Commons Home Affairs Committee said current strategies were not working and it called on the Prime Minister to establish a Royal Commission to look at all the alternatives.
Following a year-long inquiry, the committee concluded that efforts to combat the drug barons had failed while there was not enough focus on helping users to break their habits.
More top news
David Cameron is facing growing pressure for the UK to take in more of the many thousands of migrants fleeing to Europe.
China has put on its biggest display of military might in a parade to commemorate victory over Japan in World War Two.
Hungarian Prime Minister Viktor Orban is to meet with European Union leaders in Brussels today to discuss the migration crisis.