A/HRC/43/38 Office, along with UNICEF, also supported the Peace Operations Centre, a regional centre of excellence under the Vancouver Principles, in further developing its predeployment training on children and armed conflict. African Union 81. The Special Representative deepened her collaboration with the African Union. In Addis Ababa in June 2019, her Office participated in a brainstorming session with the African Union and other partners on cooperation and coordination on ending and preventing violations against children in Africa. In September 2019, her Office provided technical expertise for the African Peace Support Operations training organized by the African Union in Harare. In Addis Ababa in October 2019, her Office participated in the Pan-African Conference on Children and Armed Conflict. In addition, the Office of the Special Representative closely cooperated with the African Committee of Experts on the Rights and Welfare of the Child on a commentary on article 22, on children and armed conflict, of the African Charter on the Rights and Welfare of the Child. International Conference on the Great Lakes Region 82. In Nairobi in January 2019, the Special Representative gave a presentation on her mandate to the Technical Support Committee of the Peace, Security and Cooperation Framework for the Democratic Republic of the Congo and the Region. At that meeting, the signatory States to the Framework committed themselves to remain engaged with her Office, including with regard to the regional and subregional prevention initiatives encouraged in Security Council resolution 2427 (2018). Her Office is planning a workshop in 2020 with signatory States, in cooperation with the International Conference on the Great Lakes Region, to discuss regional prevention initiatives to better protect conflict-affected children. League of Arab States 83. In Cairo on 28 and 29 July 2019, the Office of the Special Representative participated in the Third Regional Conference on the Protection and Promotion of Human Rights, co-hosted by the League of Arab States and OHCHR. In September 2019, the Special Representative and the Assistant Secretary-General for Social Affairs of the League of Arab States met in New York to discuss how to enhance the implementation of the cooperation framework they had signed in 2014. Joint Force of the Group of Five for the Sahel 84. The Special Representative, including during her meeting in Mali in July 2019 with the Deputy Force Commander of the Joint Force of the Group of Five for the Sahel, advocated for the mainstreaming of child protection provisions in the international humanitarian law and human rights compliance framework of the Joint Force. The Office of the Special Representative contributed to the development of training modules on child protection for Joint Force officers and troops. G. Working with United Nations mechanisms 85. The Special Representative continued her cooperation and engagement with other United Nations system entities, including UNICEF, the Department of Peace Operations, the Department of Political and Peacebuilding Affairs and the Office for the Coordination of Humanitarian Affairs. Her Office contributed to the revised Integrated Disarmament, Demobilization and Reintegration Standards on the reintegration of children formerly associated with armed forces and armed groups. Her Office also contributed to a training on child protection developed by the Department of Peace Operations and to the Occasional Policy Paper of the Office for the Coordination of Humanitarian Affairs entitled “Building a culture of protection: 20 years of Security Council engagement on the protection of civilians”, published in May 2019. 15