Successful climate protection requires more effective incentive schemes that motivate countries to increase their efforts to reduce greenhouse gas emissions. According to ZEW, the UN Climate Change Conference in Glasgow (COP26) offers a good opportunity to negotiate or even establish a climate club. This would be an important step towards raising the level for ambitious climate protection. For the ZEW economists, on the other hand, it is questionable whether the gradual increase in country-specific climate change mitigation efforts agreed in the Paris Climate Agreement is really sufficient to achieve the global climate protection target. According to calculations by Climate Action Tracker, many countries have hardly shown any ambition to further reduce their emission targets. At the same time, only a few signatory countries to the Paris Agreement are on track with the 2-degree target. The reason for the hesitation of many countries certainly also lies in the underlying free-rider incentives that emanate from contributions by others to their own ambition levels.