The following notes are summaries of the EU Horizontal Working Party on Drugs discussions about Bolivia’s coca amendment and denunciation of the 1961 Single Convention on Narcotic Drugs, taken from the reports of their meetings since September 2010.

Voters in Colorado and Washington state who approved the recreational use of marijuana Tuesday sent a salvo from the ballot box that will ricochet around Latin America, a region that's faced decades of bloodshed from the U.S.-led war on drugs. Experts said the moves were likely to give momentum to countries such as Uruguay that are marching toward legalization, to undercut Mexican criminal gangs and to embolden those who demand greater debate about how to combat illegal substances.