A/HRC/4/38 page 19 respectively), the Representative participated throughout the year in the deliberations of IASC, both at the Working Group and the Principals’ level. He also participated, to a lesser extent, in the Protection Cluster Working Group, intervening on substantive issues rather than on structural ones. Pursuant to his mission to Colombia and in order to ensure greater system-wide coherence, the Representative submitted a detailed letter to IASC Principals in preparation for IASC mission in Colombia. He outlined some of his main findings and recommended areas where IASC input could be of most help to the Colombian Government in its efforts to meet the assistance and protection needs of the internally displaced. The Office of the High Commissioner for Human Rights 70. As in previous years, the Representative continues to receive assistance from OHCHR as requested by the former Commission on Human Rights in paragraph 25 of its resolution 2005/46. In particular, OHCHR provides him with support in organizing his missions and ensures the coherence of the special procedures system to which the mandate belongs. 71. More recently, the Representative undertook to establish closer contacts with other parts of the office, in order to enhance the exchange of information and the building of synergies in promoting their common goal to enhance the protection of the human rights of internally displaced persons. The Representative appreciates in particular the very receptive attitude that the High Commissioner and senior management in the office has had towards him. The Peacebuilding Commission 72. In 2006 the Representative began working on a short submission to the new Peacebuilding Commission, established by General Assembly resolution 60/180, in which he outlines the links between the need to find durable solutions for IDPs and the challenges and opportunities this presents to peacebuilding. Taking the elements outlined in the benchmarks for durable solutions, the Representative will draw up a series of recommendations for the Peacebuilding Commission to encourage the mainstreaming of the human rights of IDPs in its deliberations. While acknowledging that the general population may face the same or similar issues, he also points to the specific challenges faced by IDPs, and also by returning refugees, and where it could be in the Commission’s interest to maintain a specific focus. At the time of writing, he was waiting for a confirmation of a thematic discussion to be held with the Peacebuilding Commission on this subject. B. The Department of Political Affairs 73. In 2006, the Representative, with the Brookings-Bern Project, commissioned a study to examine how IDPs’ concerns can be brought into peacemaking processes by both mediators and IDPs themselves. The study will be based on case studies as well as a desk study summarizing past experiences. Once the study is completed, the Representative hopes to be able to present a discussion paper to the Department of Political Affairs in order to ensure that United Nations mediators are aware of the need to include IDP concerns and their requirements for durable solutions early on in the peace negotiation process.