In addition, such an approach would fail to capture several private sector engagement activities supported by bilateral agencies, development banks, and multilateral development banks, which are implemented by the public sector or CSOs. This is due to the availability of data on multilateral climate-related development finance when this analysis was initiated (this analysis was completed between September and November 2015). The definition of what constitutes the private sector differs across DFIs and MDBs, and is not always in line with the working definition provided in this paper (see Box 2.1).