The aim of this paper is to take stock of existing United Nations Framework Convention on Climate Change (UNFCCC) institutions and arrangements and the interlinkages between them in the areas of mitigation, adaptation, means of implementation, and measurement, reporting and verification (MRV), with a view to informing discussions under the ADP on the possible elements of a 2015 agreement. The paper argues that a pragmatic approach to the post-2020 international climate regime would focus on using existing institutions and arrangements more effectively before creating new ones and that the 2015 agreement could focus on maximising the potential of established institutions and reviewing their effectiveness over time, where possible, rather than setting up new institutions.