That resolution called for women to be included in decision-making positions at every level of peacemaking and peace building.
Phumzile Mlambo-Ngcuka told a high-level Security Council meeting yesterday that many of the much-needed changes are in the hands of the 193 UN-member states.
She said a growing body of evidence shows the "most under-utilised tool we have for successfully building peace is the meaningful inclusion of women."
Alaa Murabit, who heads an organisation called The Voice of Libyan Women, blamed member states for continuing "to ignore the one tool that has never been more urgent for us to utilise: the participation of women.