A/HRC/21/50 47 10. Non-state actors and IHRL: Non-state actors cannot formally become parties to international human rights treaties. They must nevertheless respect the fundamental human rights of persons forming customary international law (CIL), in areas where such actors exercise de facto control.8 The commission therefore examined allegations of human rights violations committed by the Syrian Government as well as abuses of customary international human rights norms perpetrated by the anti-Government armed groups. IV. International humanitarian law 11. International humanitarian law (IHL), also known as the law of armed conflict, is binding on all parties to a conflict.9 Its applicability is triggered whenever hostilities meet the thres...