A/HRC/13/36 and the set of principles for the protection and promotion of human rights through action to combat impunity.42 47. The Basic Principles and Guidelines provide for different categories of reparation. Since torture constitutes a particularly serious violation of human rights, criminal prosecution and appropriate punishment is perceived by the victim as the most effective means of satisfaction and justice. Criminal investigations serve the purpose of establishing truth and pave the way for other forms of reparation. Guarantees of non-repetition, such as amending relevant laws, fighting impunity and taking effective preventive or deterrent measures, constitute a form of reparation if torture is practised in a widespread or systematic manner. Monetary compensation for the immaterial damage (pain and suffering) or material damage (rehabilitation costs, etc.) may provide satisfaction as an additional form of reparation. 48. In its general comment No. 15, the Human Rights Committee indicates that under article 2 (1) of the International Covenant on Civil and Political Rights, the obligation is not limited to a State’s citizens, but must be guaranteed to all individuals, regardless of nationality or statelessness, such as asylum-seekers, refugees, migrant workers and others who may find themselves subject to the jurisdictional regulations of the territory in which they are found. Such remedies should be appropriately adapted to take account of the special vulnerability of certain categories of person, including in particular children. As was confirmed by general comment No. 31, this principle also applies to those within the power or effective control of the forces of a State acting outside its territory, regardless of the circumstances in which such power or effective control was obtained. States must ensure that individuals have accessible and effective remedies to vindicate the aforementioned rights, which should be appropriately adapted to the special vulnerability of certain categories of persons, particularly children. IV. Conclusions and recommendations 49. States are urged to ensure that measures taken to combat crimes of terrorism comply with their obligations under international human rights law, in particular the right to an effective remedy for victims of human rights violations. 50. States are urged to respect all rights, in particular non-derogable rights. It is extremely important that the Member States reconfirm their commitment to the absolute prohibition of torture and cruel, inhuman and degrading treatment, which are not to be permitted under any circumstances. 51. States are urged to cooperate with the special procedures of the Human Rights Council in enforcing accountability mechanisms and measures and means of providing remedies to victims. 52. States are urged to issue a standing invitation to all special procedures of the Human Rights Council, and in particular to the Special Rapporteur on the promotion and protection of human rights and fundamental freedoms while countering terrorism, the Special Rapporteur on torture and other cruel, inhuman or degrading treatment or punishment, the Special Rapporteur on extrajudicial, summary or arbitrary executions and the Working Groups on Arbitrary Detention and on Enforced or Involuntary Disappearances. 42 GE.10-10442 E/CN.4/Sub.2/1997/20/Rev.1, annex II, and E/CN.4/2005/102/Add.1. 17