A panel of former world leaders says the so-called war on drugs has failed with “devastating consequences” for individuals and communities worldwide.

In a report released Thursday, the Global Commission on Drug Policy said governments should consider fundamentally reforming their approach to drug use, including making marijuana legal.

The report says “vast” sums have been spent enforcing laws in the decades-long war on drugs.

However, the panel says these efforts have “clearly failed” to decrease the supply or consumption of drugs around the world.

Their suggestions include making it legal for people who do not harm others to use marijuana and other drugs, providing treatment for drug addiction as a health service, and working to find a legal model that undermines the organized crime syndicates who sell the drugs.

The 19-member panel is made up of prominent statesmen, many from countries integrally involved in the drug enforcement effort, including former presidents of Colombia and Mexico Cesar Gaviria and Ernesto Zedillo, former U.N. Secretary General Kofi Annan, and former U.S. Secretary of State George Schultz.