The UN Security Council is increasingly under pressure to address climate change as a threat to international peace and security. Yet disagreements about the Council�s mandate as well as its current mode of operation render the body ill-suited for tackling climate change-related challenges. This publication discusses whether action on climate change could trigger transformation of the Council into an organ better suited for the world�s 21st century challenges in general. Reform proposals include forward-looking initiatives supported by affected states, as well as coordinated symbolic gestures from the Permanent Five Security Council Members.