The International Court of Justice issued a significant ruling, stating that countries have a legal obligation to reduce emissions and prevent harm to the climate system. This decision, hailed by developing nations most vulnerable to climate change, sets a precedent for countries to hold each other accountable for climate damage. The advisory opinion from the court emphasizes the urgency of collective action in mitigating climate impacts and the responsibility of states to address historical emissions. This underscores the critical need for countries to set ambitious climate targets and prioritize emissions reduction.