The United Nations Working Group on the use of mercenaries...urged Governments to recognize the need for a legally binding international agreement to regulate the use and activities of private military and security companies (PMSCs) to complement existing regulations...Katz stressed that existing national legislation is not sufficient to address the challenges posed by PMSCs. He cited inadequacies related registering and licensing, and the lack of effective and transparent mechanisms and remedies for human rights violations within existing legislation, adding that these limitations are worsened by the transnational nature of PMSCs and the difficulties in ensuring accountability for any violations that may occur. He noted that there are self-regulatory initiatives such as the Montreux Document and the International Code of Conduct...“However, these initiatives are not legally binding and cannot be considered as complete solutions for the problems concerning PMSCs,”...