S/2017/249 trafficking in persons when committed in situations of conflict for the purpose of sexual violence/exploitation. 3. While many countries are affected by the threat, occurrence or legacy of conflict-related sexual violence, the present report is focused on 19 countries for which credible information is available. It should be read in conjunction with my previous annual reports on conflict-related sexual violence, which provide a cumulative basis for the listing of 46 parties (see annex). The majority of listed parties are non-State actors, with seven of these having been designated as terrorist groups pursuant to Security Council resolutions 1267 (1999), 1989 (2011) and 2253 (2015), the ISIL (Da’esh) and Al-Qaida sanctions list. Regarding national military and police forces, those that are listed are required to engage with my Special Representative in order to develop specific, time -bound commitments and action plans to address violations and, since 2010, several have done so. Effective implementation of commitments is a key requirement for the delisting of parties. All States repeatedly listed for grave violations against children and/or conflict -related sexual violence will be prohibited from participating in United Nations peace operations. 4. The report is based on information collected by the United Nations. In this regard, the increased presence of women’s protection advisers, who are responsible for convening the monitoring, analysis and reporting arrangements on conflict related sexual violence in the field, has improved the availability and quality of information. Currently, 34 women’s protection advisers are deployed in eight mission settings. All six peacekeeping missions with mandates that include the protection of civilians have established the monitoring arrangements and incorporated the matrix of early-warning indicators of conflict-related sexual violence into their broader protection structures. Two special political missions have also begun to establish these monitoring arrangements. A concerted effort to enhance prevention, early warning and swift responses to this historically hidden crime will require dedicated human and financial resources commensurate with the scale of the challenge. The prevention of sexual violence is an integral part of wider conflict prevention and, as stated in my inaugural address to the Security Council, prevention is not merely a priority, but the priority. 5. Strengthening the capacity of national institutions is critical to ensuring accountability for past crimes, as well as prevention and deterrence for the future. In this regard, the Team of Experts on the Rule of Law and Sexual Violence in Conflict, in accordance with its mandate under Security Council resolution 1888 (2009), has assisted governments with criminal investigation and prosecution, military justice, legislative reform, protection of victims and witnesses and reparations. Reporting directly to my Special Representative on Sexual Viole nce in Conflict, the Team of Experts is composed of specialists from the Department of Peacekeeping Operations, the Office of the United Nations High Commissioner for Human Rights (OHCHR) and the United Nations Development Programme (UNDP), supplemented by a roster of experts with a range of specializations. With dedicated assistance, Governments can effectively adjudicate such crimes, as demonstrated by the case of Guinea, where the technical support provided by the Team of Experts to a national panel of judges investigating mass rape and other crimes committed in September 2009, resulted in the indictments of 17 high -ranking military and political officials, including the former President, Moussa Dadis 2/33 17-05090