Estonia reports major progress against fentanyl in recent years, with overdose deaths declining substantially by 2018, according to coverage by The New York Times. Officials credit earlier efforts that reduced fentanyl-related harm. However, the country faces a new and evolving drug landscape as additional potent substances appear. The reporting says authorities are racing to adapt to faster-moving supply and changing drug use patterns, which can limit the effectiveness of existing public health and enforcement measures. While fentanyl overdoses have fallen from earlier peaks, the emergence of new drugs creates fresh risks for users and challenges for treatment, monitoring, and law enforcement. The situation highlights the possibility that drug markets shift quickly in response to interdiction and policy, leading to the appearance of different synthetic opioids or other dangerous drugs. The article frames Estonia’s experience as both a sign of how interventions can reduce harm and a reminder that drug threats continue to change. Overall, the focus remains on how Estonia responds to the next wave of substances rather than on the earlier fentanyl problem alone.