This document reports on the twenty-first meeting of the Least Developed Countries Expert Group (LEG), held in Thimphu, Bhutan, from 9 to 13 March 2012, and provides a two-year rolling work programme for 2012–2013 and an update on the efforts of the LEG to implement its work. The report includes a summary of the status of preparation and implementation of national adaptation programmes of action (NAPAs). In addition, it provides information on the planning process for the upcoming LEG regional training workshops, as well as a summary of the discussions on the technical guidelines for the national adaptation plan process. The report provides details of the discussions with the Global Environment Facility and its agencies on the latest experiences, emerging issues and gaps in developing NAPA projects, and the discussions on further specifications for the elements of the least developed countries work programme other than the NAPA. Issues discussed during a meeting between the LEG and Bhutan's NAPA team are also presented