CRC/GC/2005/6 page 18 entail extraterritorial effects and States shall refrain from returning a child in any manner whatsoever to the borders of a State where there is a real risk of under-age recruitment or participation, directly or indirectly, in hostilities. Child-specific forms and manifestations of persecution3 59. Reminding States of the need for age and gender-sensitive asylum procedures and an age and gender-sensitive interpretation of the refugee definition, the Committee highlights that under-age recruitment (including of girls for sexual services or forced marriage with the military) and direct or indirect participation in hostilities constitutes a serious human rights violation and thereby persecution, and should lead to the granting of refugee status where the well-founded fear of such recruitment or participation in hostilities is based on “reasons of race, religion, nationality, membership of a particular social group or political opinion” (article 1A (2), 1951 Refugee Convention). Rehabilitation and recovery 60. States shall develop, where needed, in cooperation with international agencies and NGOs, a comprehensive age-appropriate and gender-sensitive system of psychological support and assistance for unaccompanied and separated children affected by armed conflict. (i) Prevention of deprivation of liberty and treatment in cases thereof 61. In application of article 37 of the Convention and the principle of the best interests of the child, unaccompanied or separated children should not, as a general rule, be detained. Detention cannot be justified solely on the basis of the child being unaccompanied or separated, or on their migratory or residence status, or lack thereof. Where detention is exceptionally justified for other reasons, it shall be conducted in accordance with article 37 (b) of the Convention that requires detention to conform to the law of the relevant country and only to be used as a measure of last resort and for the shortest appropriate period of time. In consequence, all efforts, including acceleration of relevant processes, should be made to allow for the immediate release of unaccompanied or separated children from detention and their placement in other forms of appropriate accommodation. 62. In addition to national requirements, international obligations constitute part of the law governing detention. With regard to asylum-seeking, unaccompanied and separated children, States must, in particular, respect their obligations deriving from article 31 (1) of the 1951 Refugee Convention. States should further take into account that illegal entry into or stay in a country by an unaccompanied or separated child may also be justified according to general principles of law, where such entry or stay is the only way of preventing a violation of the fundamental human rights of the child. More generally, in developing policies on unaccompanied or separated children, including those who are victims of trafficking and exploitation, States should ensure that such children are not criminalized solely for reasons of illegal entry or presence in the country.