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.

Over the past year, the world has eyed Latin America as it has forged forward, in both policy and politics, with a rethink of the “war on drugs.” (See our recent cover story on “Latin America reinventing the war on drugs” here.) But tomorrow, the world will be watching the United States, the birthplace of the “war on drugs,” as three states vote on legalizing the recreational use of marijuana.

Two years ago, California’s bid to legalize marijuana—Proposition 19—achieved great notoriety in Latin America, but ultimately fell short at the ballot box. Next Tuesday, voters in the state of Washington appear ready to do what Prop 19’s supporters could not quite achieve—an Election Day victory.