Prime Minister John Key has today announced an extra $15 million seized from criminals will be invested in anti-drug initiatives.

Pro-cannabis campaigners this afternoon gathered outside police stations around the country to call for a moratorium on the arrest and prosecution of users.

COMMENT: We must replace the criminal justice approach with health interventions, just as they did 15 years ago in Portugal, writes Dr Lance O'Sullivan and Tuari Potiki.

How severely people are dealt with for possession of illegal drugs or drug utensils is to be reviewed.

Police have shut down two sophisticated drug rings and seized meth worth up to $123 million during a series of busts across Auckland.

More than $200,000 of cannabis has been kept off the street after police's annual drug raid.

Virgin founder Sir Richard Branson says he wants to speak to Indonesian President Joko Widodo in an effort to save those facing the death penalty in the southeast Asian country.

An investigation into the use of cannabis for medical purposes has been carried out by the Ministry of Health.