CAT/C/ISR/CO/5 confinement and other forms of isolation, and allegations of torture and ill-treatment (see paras. 21, 23 (a), 25 (b) and 31 (b) above). 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 53. Recalling its previous concluding observations (CAT/C/ISR/CO/4, paras. 35-37), the Committee again encourages the State party to: (a) Become a party to the Optional Protocol to the Convention; (b) Consider making the declarations under articles 21 and 22 of the Convention, in order to recognize the competence of the Committee to receive and consider inter-State and individual communications; (c) Withdraw its reservation to article 20 of the Convention. 54. The Committee invites the State party to consider becoming a party to the core United Nations human rights treaties to which it is not yet party, namely, the International Convention on the Protection of the Rights of All Migrant Workers and Members of their Families and the International Convention for the Protection of All Persons from Enforced Disappearance; and to the protocols to the core United Nations human rights treaties to which it is not yet a party, namely, the Optional Protocol to the International Covenant on Civil and Political Rights and the Second Optional Protocol to the International Covenant on Civil and Political Rights, aiming at the abolition of the death penalty; the Optional Protocol to the International Covenant on Economic, Social and Cultural Rights; the Optional Protocol to the Convention on the Rights of the Child on a communications procedure; the Optional Protocol to the Convention on the Elimination of All Forms of Discrimination against Women; and the Optional Protocol to the Convention on the Rights of Persons with Disabilities. 55. The State party is requested to disseminate widely the report submitted to the Committee and the present concluding observations, in appropriate languages, through official websites, the media and non-governmental organizations. 56. The Committee requests the State party to submit its sixth periodic report by 13 May 2020. For that purpose, and in view of the fact that the State party has agreed to report to the Committee under the simplified reporting procedure, the Committee will, in due course, submit to the State party a list of issues prior to reporting. 12 GE.16-08992