On 9 October 2018, the Court of Appeal of The Hague (the Netherlands) upheld the District Court’s decision in the case of Urgenda, thus confirming the obligation of the Netherlands to reduce its greenhouse gas (GHG) emissions by at least 25% by 2020 compared with levels in 1990. This case raised some of the thorniest issues in climate law. As the Netherlands is responsible for only a tiny fraction of global GHG emissions, is it right for a court to hold that a national emissions reduction mitigation target is necessary to prevent dangerous climate change and its impact on human rights? If so, how can this target be determined? The District Court and the Court of Appeal of The Hague have provided inspiring responses, although they are perhaps not entirely convincing.