Keith Morris nearly died in January 1993 when a Pablo Escobar-ordered car bomb destroyed a Bogotá boardroom he had left fifteen minutes earlier. Now approaching 92, the former British ambassador to Colombia is responding to a Guardian investigation revealing Latin American organised crime may operate in 16 European countries — including Colombian ELN and various FARC dissident factions — with a familiar argument he first made in the same newspaper in 2001: legalise and regulate. The numbers have moved dramatically in favour of his case, at least on the supply side. The cocaine trade has increased fivefold in the last decade, boosting organised crime on both sides of the Atlantic. Aggressive law enforcement has damaged producer and transit countries without reducing drug flow to consumers. Prohibition keeps prices high for a cheaply produced commodity, and the incentive gap is simply too large for enforcement to close. This is not a new observation, but the scale of failure is now harder to dismiss. Morris points to legal cannabis regimes in Canada, Uruguay, and more than 20 US states as possible models for cocaine regulation. The argument is straightforward: if state-supervised legalisation can work for cannabis, the mechanism could be adapted. The political distance between cannabis and cocaine remains enormous, but Morris is making a structural argument about incentives, not a cultural one about acceptability. The fentanyl crisis complicates and, Morris argues, strengthens the case. Of roughly 80,000 drug overdose deaths in the United States in 2024, 48,000 involved fentanyl while 22,000 involved cocaine. The availability of vastly more dangerous synthetic drugs could make legally controlled, quality-assured cocaine a harm-reduction alternative — a less-bad option in a landscape where the worst options are already freely available. Former Colombian vice-president Marta Lucía Ramírez responded to the Guardian investigation with a call for effective international cooperation against transnational criminal networks. This is the orthodox response: more coordination, more enforcement, more pressure. Morris has watched this approach for over three decades and considers it structurally incapable of success. The disagreement is not about facts but about whether enforcement at any scale can overcome the price incentive of prohibition. The letter is notable not for the novelty of its argument — drug policy reformers have made this case for decades — but for who is making it and from what vantage point. A former ambassador who served during the worst of the Colombian drug wars, who survived an assassination attempt by the most notorious trafficker in history, and who has watched the problem metastasise for 30 years carries a different kind of authority than an academic or activist. His argument is essentially unchanged since 2001. The situation has only worsened. Whether any European government will move from cannabis legalisation to cocaine regulation remains politically implausible in the near term. But the scale of organised criminal infiltration documented by the Guardian — 16 European countries — suggests that the enforcement-only approach is producing exactly the outcome Morris predicted two decades ago: expanding criminal empires funded by an unkillable market.