Rights of the child A/RES/72/245 in promoting and protecting the human rights of all children affected by migration and in avoiding approaches that might aggravate their vulnerability; 10. Expresses the commitment to protect the human rights of migrant children, given their vulnerability, in particular unaccompanied migrant children, to ensure that they receive appropriate protection and assistance and to provide for their health, education and psychosocial development, ensuring that the best interests of the child are a primary consideration in policies on integration, return and family reunification; Children and the administration of justice 11. Reaffirms paragraphs 29 to 31 of its resolution 71/177 and 49 to 57 of its resolution 68/147, and calls upon all States to respect and protect the rights of child victims and witnesses and children alleged to have infringed or recognized as having infringed penal law, as well as children of persons alleged to have infringed or recognized as having infringed penal law, and to ensure that the arrest, detention or imprisonment of a child should be in conformity with the law and should be use d only as a measure of last resort and for the shortest appropriate period of time; 12. Encourages continued regional and cross-regional efforts, the sharing of best practices and the provision of technical assistance in the field of juvenile justice; Prevention and eradication of the sale of children, child prostitution and child pornography 13. Reaffirms paragraphs 32 of its resolution 71/177 and 58 of its resolution 68/147, and calls upon all States to prevent, criminalize, prosecute and punish all forms of the sale and trafficking of children, including for the purposes of removal of organs of the child, child slavery, forced labour and the sexual exploitation of children, including child prostitution and child pornography and other child sexual abuse material, with the aim of eradicating those practices, including when perpetrated using the Internet and other information and communications technologies, to combat the existence of a market that encourages such criminal practices and take measures to eliminate the demand that fosters them, as well as addressing the rights and needs of victims effectively, including universal access to comprehensive social, physical and mental health and legal services, without discrimination of any kind, and counselling for all victims to ensure their full recovery and reintegration into society, and to take effective measures against the criminalization of children who are victims of exploitation; Children affected by armed conflict 14. Reaffirms paragraphs 33 to 39 of its resolution 71/177 and 59 to 70 of its resolution 68/147, condemns in the strongest terms all violations and abuses committed against children in armed conflict, and in this regard urges all States and other parties to armed conflict that are engaged, in contravention of applicable international law, in the recruitment and use of children, in patterns of killing and maiming of children and/or rape and other sexual violence against children, acknowledging that sexual violence in these situations disproportionate ly affects girls, but that boys are also targets, in recurrent attacks on schools and/or hospitals and related personnel, and in patterns of abduction of children, as well as in all other violations and abuses against children, to take time-bound and effective measures to end and prevent them, and to encourage age- and gender-specific support services, including psychological, social and sexual and reproductive health -care services and reintegration programmes, and notes in this regard the adoption of Secur ity Council resolution 2225 (2015) of 18 June 2015; 17-23328 7/15