In a little over a decade, the international community has made significant progress in institutionalising and operationalising a response to Loss and Damage associated with climate change impacts. The Loss and Damage governance framework consists of three main bodies: The Warsaw International Mechanism (WIM), which functions as the ‘policy arm’; the Santiago Network under the WIM, which functions as the ‘technical arm’; and the Funding Arrangements including a Fund for responding to Loss and Damage (FRLD), which forms the ‘financial arm’. The WIM was the first major milestone in acknowledging and reacting to the calls of particularly vulnerable developing countries for support to deal with losses and damages caused by climate change since the 1990s. In the short time since its establishment in 2013, the WIM played a central role in advancing the Loss and Damage agenda internationally. This paper will give an overview of the background of the WIM, explain its modalities as well as its relevance for international cooperation in the context of climate negotiations.