A/HRC/31/20 legislation and national plans of action to prevent and respond to violence, along with mechanisms to collect and analyse data to inform planning, policy and budgetary decisions, as well as monitoring and evaluation. Regional organizations and institutions have become crucial players in these efforts and some, for example, the Association of Southeast Asian Nations (ASEAN) and the Council of Europe, are aligning new regional plans on violence against children with the Sustainable Development Goals. 16. But such progress, however significant, needs to be further consolidated. The implementation of the 2030 Agenda requires strengthened partnerships and the mobilization of significant resources; the protection of children from violence cannot be an afterthought. A broad global alliance uniting Governments, civil society, community and religious leaders, the private sector, international organizations and all other actors, including children themselves, is crucial. For this reason, the Special Representative supports the development of a global partnership to end violence against children as well as the ILO initiative Alliance 8.7, which mobilizes efforts towards ending child labour in accordance with target 8.7 of the Sustainable Development Goals. Human rights treaty bodies and mechanisms, including the universal periodic review process and the work of special procedures, can become strategic players by mainstreaming the violence-related targets of the Goals into their monitoring work. 17. The roots of violence against children are multifaceted, and preventing and eliminating it require a multisectoral and integrated approach. Achieving all the targets of the Sustainable Development Goals, especially those related to ending poverty and child labour; addressing gender inequality and harmful practices; and promoting health and education, access to justice and accountable and inclusive institutions will help reduce the risk of violence in children’s lives and provide effective responses for victims. Failing to end violence against children will compromise social progress and the realization of the vision of sustainable development. 18. The violence-related targets in the 2030 Agenda are achievable, but measuring progress will need to be supported by sound data and stronger national statistical capacity. Along with the consolidation of knowledge and data on children’s exposure to sexual, physical and emotional violence, it is crucial to develop enhanced tools and methodologies that can capture the full magnitude and incidence of all forms of violence against all girls and boys under 18 years of age. 19. Children have high expectations of this process. They want a future where all children, and everyone else, can enjoy a safe, happy and healthy life, free from fear and from violence. This is their vision. But, as they often stress, a vision without a plan is only a nice dream, and a plan without a vision can become a nightmare. The implementation of the Sustainable Development Goals can help build a world as big as children’s dreams. This is children’s ambition, and this is the noble cause the world has before it. B. Global study on children deprived of liberty 20. As implementation of the 2030 Agenda starts, countless children are already being left behind. This includes children deprived of their liberty. Children in vulnerable situations, including those who have run away from domestic violence, those who live on the street and those who are victims of trafficking, prostitution, organized crime or conflict situations are at special risk; still others may end up in detention as a result of mental health and drug abuse, or because of their status as migrants or asylum seekers. 21. Held in closed institutions, psychiatric centres or adult prisons, where they await trial for long periods of time, these children often lack genuine opportunities to access justice and challenge the legality of their detention, or to benefit from education and 6