ABBREVIATIONS AND ACRONYMS ICTY – International Criminal Tribunal for the former Yugoslavia IE - Independent Expert ITR - International Tribunal for Rwanda IOM - International Organization for Migration Nelson Mandela Rules - UN Standard Minimum Rules for the Treatment of Prisoners OHCHR - Office of the High Commissioner for Human Rights OPAC - Optional Protocol to the UN Convention on the Rights of the Child on the Involvement of Children in Armed Conflict OPCAT - Optional Protocol to the UN Convention against Torture OPIC - Optional Protocol to the UN Convention on the Rights of the Child on a Communications Procedure UNGACC - UN Guidelines for the Alternative Care of Children UNHCR - United Nations High Commissioner for Refugees UNICEF - United Nations Children’s Fund UNODC - United Nations Office on Drugs and Crime Riyadh Guidelines - UN Guidelines for the Prevention of Juvenile Delinquency Tokyo Rules - UN Standard Minimum Rules for Non-custodial Measures SCSL - Special Court for Sierra Leone SRSG CAAC – UN Special Representative of the Secretary-General on Children and Armed Conflict SRSG VAC – UN Special Representative of the Secretary-General on Violence against Children Vienna Guidelines - Guidelines for Action on Children in the Criminal Justice System WGAD – UN Working Group on Arbitrary Detention WGDAW – UN Working Group on the Issue of Discrimination against Women in Law and in Practice WHO - World Health Organization XXVIII