A/HRC/33/38 (b) Respect and ensure respect for international humanitarian law, including in relation to the prohibition on attacks against civilians and civilian objects, and the core principles of precaution, distinction and proportionality; (c) End the recruitment of children for military purposes and their use in hostilities, and ensure that measures are taken to prevent such recruitment and use; (d) Allow and facilitate rapid and unimpeded passage of humanitarian relief for civilians in need. 72. The High Commissioner urges the Government of Yemen to: (a) Protect the human rights of all persons; (b) Accede to the Rome Statute of the International Criminal Court and introduce domestic legislation consistent with it. 73. The High Commissioner urges all non-State actors taking part in the conflict, particularly the Popular Committees affiliated with the Houthis and the army units loyal to former President Saleh to: (a) liberty; Immediately and unconditionally release all persons deprived of their (b) Immediately cease all attacks against freedom of expression and opinion, including abductions, disappearances and intimidation; (c) Grant unrestricted access to OHCHR and other mandated agencies to all places of deprivation of liberty and to those deprived of their liberty. 74. The High Commissioner calls upon the international community to: (a) In the light of the gravity of allegations of violations of international humanitarian law, and violations and abuses of international human rights law, in the absence of decisive and comprehensive national accountability processes enjoying consent by all concerned parties and given the challenges faced by the national commission of inquiry, establish an international, independent investigative body to carry out comprehensive investigations; (b) Allow and facilitate rapid and unimpeded passage of humanitarian relief for civilians in need; (c) Use its influence to prevent and end violations, and to refrain from encouraging or arming parties to the conflict. 22