CAT/OP/UKR/3 standards. It recommends that facilities for juveniles receive natural light and that the food provided be of nutritional value and adequate for health. V. Repercussions of the visit 108. In accordance with article 15 of the Optional Protocol, the Subcommittee calls upon Ukraine to ensure that there are no reprisals following the Subcommittee’s visit. To that end, it requests that the State party provide detailed information in its reply on what it has done to prevent potential reprisals against anyone who provided information to the Subcommittee. 109. The Subcommittee urges the State party to cooperate fully with the Subcommittee and to ensure that, during future visits, the Subcommittee face no obstacles in exercising its mandate, which would again cause it to consider the success of its mission to be in jeopardy. Should such obstacles present themselves, the Subcommittee may use all appropriate measures to address them, including the issuance of a public statement or the release of its preliminary findings, as provided for in article 16 (4) of the Optional Protocol. The Subcommittee may also utilize all good offices available within the United Nations system or other appropriate forums. 18