In that context, women constitute the majority of Syrian IDPs and refugees. The regime's officials, security apparatus, loyalists and thugs subject them to discrimination, physical and sexual assault, violations of their right to privacy, arbitrary arrest and detention as a means of forcing their male relatives to turn themselves in. Such acts amount to war crimes and crimes against humanity and their perpetrators must be held accountable. The Secretary-General stresses in his report that in Syria, such acts constitute the main reasons why women and girls have fled conflict- affected cities, including the high level of insecurity and access constraints.