A/RES/61/146 accession to or ratification of the Hague Convention on the Civil Aspects of International Child Abduction, 17 and therefore to be in full compliance with the Convention, and to facilitate, inter alia, the return of the child to the country in which he or she resided immediately before the removal or retention; 11. Further calls upon States to take all necessary measures to prevent and combat illegal adoptions and all adoptions that are not in the best interests of the child; Economic and social well-being of children 12. Calls upon States and the international community to create an environment in which the well-being of the child is ensured, inter alia, by: (a) Cooperating, supporting and participating in the global efforts for poverty eradication at the global, regional and country levels, recognizing that strengthened availability and effective allocation of resources are required at all these levels, in order to ensure that all the internationally agreed development and poverty eradication goals, including those set out in the United Nations Millennium Declaration,5 are realized within their time framework, and reaffirming that investments in children and the realization of their rights are among the most effective ways to eradicate poverty; (b) Recognizing the right to education on the basis of equal opportunity and non-discrimination by making primary education compulsory and available free to all children, ensuring that all children have access to education of good quality, as well as making secondary education generally available and accessible to all, in particular through the progressive introduction of free education, bearing in mind that special measures to ensure equal access, including affirmative action, contribute to achieving equal opportunity and combating exclusion, and ensuring school attendance, in particular for girls and children from low-income families; (c) Taking all necessary measures to ensure the right of the child to the enjoyment of the highest attainable standard of health and developing sustainable health systems and social services, ensuring access to such systems and services without discrimination, paying special attention to adequate food and nutrition, to the special needs of adolescents and to reproductive and sexual health, and securing appropriate prenatal and post-natal care for mothers, including measures to prevent mother-to-child transmission of HIV; (d) Assigning priority to developing and implementing activities and programmes aimed at treating and preventing addictions, in particular addiction to alcohol and tobacco, and the abuse of narcotic drugs, psychotropic substances and inhalants; (e) Supporting adolescents to be able to deal positively and responsibly with their sexuality in order to protect themselves from HIV/AIDS infection and implementing measures to increase their capacity to protect themselves from HIV/AIDS through, inter alia, the provision of health care, including for sexual and reproductive health, and through preventive education that promotes gender equality; _______________ 17 4 United Nations, Treaty Series, vol. 1343, No. 22514.