The project investigated the power resources and the choice of bargaining strategies by member states in the current United Nations Framework Convention on Climate Change (UNFCCC) negotiations leading to the Post-Kyoto agreement in Copenhagen. A systematic collection of negotiation positions and interviews on the choice of negotiation strategies with negotiation observers has shed light on questions whether external power resources such as economic size can be compensated by the use of strategies. The determining factors explaining choice of positions and strategies have then been investigated in a second step. The analysis contributed to ongoing research on power resources and strategies in international institutions. Given the strong salience of climate change for many developing countries, the research project allowed to derive the determinants of successful negotiation strategies for these countries. While they are traditionally looked at as weaker players given that their power resources are limited, climate change negotiations provide evidence for a number of exceptions to this rule.