A/HRC/33/53 have favoured mobility within the region, efforts must be made to ensure the effective protection of rights and the social integration of Central American migrants. There has not yet been effective collaboration. 85. In 2014, the Inter-American Court of Human Rights issued its advisory opinion No. 21 on the rights and guarantees of children in the context of migration and/or in need of international protection. The advisory opinion was issued in response to a request made in 2011 by the States that were members of MERCOSUR at the time, namely Argentina, Brazil, Paraguay and Uruguay. It was the first time that a block of States appeared before the Inter-American human rights system with a common position on an issue of concern for the protection of human rights in the region. Advisory opinion No. 21 is a regional achievement that provides novel guidelines that define and expand the scope of the rights and interests of migrant children. Furthermore, the opinion highlights the principle of the primacy of childhood over immigration policy and, in that regard, the principle of upholding the best interests of the child in all measures adopted under immigration proceedings. 86. Youth Care is a network of private organizations structured by regional authorities in Belgium. Through the network, non-governmental entities organize services that are, however, recognized and funded by the Government. All children, regardless of their age and the moment of reception, can at any time be referred to Youth Care, on condition that they have “special” needs recognized by the authorities. The services provided include reception in residential structures, foster care and guidance on living alone. Given the nature of the services and the kind of funding available, Youth Care assists in a very different way from how federal agencies operate in terms of the type of accommodation and infrastructure, the number of staff, the training provided to staff and the number of children living together. There are long waiting lists, however, for gaining access Youth Care services and the network is not able to meet all the needs of the youngsters. 87. In Europe, there is some institutional collaboration for the purpose of protecting unaccompanied children seeking asylum. The Dublin III regulation on family reunification calls for collaboration on a case-by-case basis. 88. In Southern Africa, efforts have been stepped up through the implementation of joint projects involving three countries. For example, the “Destination unknown” campaign, which is being implemented in Mozambique, South Africa and Zimbabwe, is being funded by Terres des Hommes Germany. That said, regional efforts and coordination need to develop significantly if unaccompanied migrant children are to be protected.59 VII. Role of civil society 89. Many countries with serious migration issues have strengthened the relationship between Government and civil society. In that regard, States recognize the work that civil society organizations do in order to serve, assist and guide migrant children in their primary or basic needs, as well as in the promotion of their human rights. Other reports, however, such as the one presented by Caritas Myanmar, indicate that there continues to be a lack of collaboration between government entities, international and national NGOs and United Nations organizations. 90. Civil society plays a prominent role in uncovering the problem of insecurity, providing services and a range of institutional networks with experience in migration and 59 16 Information provided by Terre des Hommes Zimbabwe.