The mayor of Amsterdam may be unable to deliver on his promise to scrap the ban on tourists visiting the city's marijuana-selling coffee shops, the Dutch justice ministry said.
Colorado and Washington became the first US states to legalize the possession and sale of marijuana for recreational use in defiance of federal law, setting the stage for a possible showdown with the Obama administration.
Washington state made history today as the first in the nation to legalize marijuana for adult recreational use, an occasion celebrated by dozens of users near Seattle's famed Space Needle amid blaring reggae music and a haze of pot smoke.
Uruguay's government has sent a bill to Congress that would allow the state to grow and sell marijuana, a move that President Jose Mujica says will cut crime associated with illegal drug trafficking.
A Mexican lawmaker presented a bill today to legalize the production, sale and use of marijuana, adding to a growing chorus of Latin American politicians who are rejecting the prohibitionist policies of the United States.
US competitor Nick Delpopolo was expelled from the London Olympic Games after testing positive for marijuana and apologised to organisers, fans and fellow athletes for unwittingly eating a brownie that had been baked with the drug.
Mexican boxer Julio César Chávez Jr. tested positive for marijuana with the Nevada State Athletic Commission, following his middleweight championship fight last weekend with Argentine Sergio "Maravilla" Martínez.
R&B singer Chris Brown has tested positive for marijuana, leading a Los Angeles judge to set a November hearing to decide whether he violated his probation stemming from a 2009 assault on then-girlfriend Rihanna.