CAT/C/DEU/CO/6 54. The Committee further regrets the lack of clarity on whether personnel, including interpreters, in contact with asylum seekers and undocumented migrants complete mandatory training on identifying the signs of trauma, including mental disorders (art. 10). 55. The State party should: (a) Guarantee the ongoing training of all personnel, including by ensuring that education, information and instructions regarding the provisions of the Convention are fully included in the training of military personnel and other persons who may be involved in the custody, interrogation or treatment of any individual subjected to any form of arrest, detention or imprisonment; (b) Ensure that both the Convention and other related international instruments, such as the Nelson Mandela Rules and the United Nations Rules for the Treatment of Women Prisoners and Non-custodial Measures for Women Offenders (the Bangkok Rules), are included in training; (c) Ensure that training on the identification of signs of physical and mental torture, in particular on the Istanbul Protocol, is specifically provided to personnel dealing with asylum seekers and refugees; (d) Develop and implement specific methodologies to assess the effectiveness and impact of training and educational programmes provided to relevant public officials on the provisions of the Convention in terms of reducing the number of cases of torture and ill-treatment. 56. The State party should provide the Committee with specific data on the use of the Istanbul Protocol and any decisions that concluded that asylum seekers were victims of torture or ill-treatment. Convention as source of law in national courts 57. The Committee notes with concern the lack of detail provided by the State party on cases in which the Convention has been invoked and directly applied before the domestic courts (arts. 2 and 10). 58. The State party should disseminate the Convention to all public authorities, including the judiciary, thus facilitating invocation and direct application of the Convention before domestic courts, both at the federal and Länder levels. The State party should also provide information to the Committee on the number of domestic cases in which the Convention has been invoked or directly applied. Follow-up procedure 59. The Committee requests the State party to provide, by 17 May 2020, information on follow-up to the Committee’s recommendations on the National Agency for the Prevention of Torture, violence against asylum seekers and migrants, and training on the Istanbul Protocol (see paras. 14, 31 (d) and 55 (c) above, respectively). In that context, the State party is invited to inform the Committee about its plans for implementing, within the coming reporting period, some or all of the remaining recommendations in the concluding observations. Other issues 60. The State party should take appropriate measures to notify the SecretaryGeneral through the Treaty Section of the Office of Legal Affairs of the revocation of its declaration made under the Optional Protocol to the Convention, concerning the postponement of the implementation of its obligations under Part IV of the Optional Protocol. 61. The Committee invites the State party to ratify the core United Nations human rights treaties to which it is not yet party. 62. The State party is requested to disseminate widely the report submitted to the Committee and the present concluding observations, in appropriate languages, 10