In the lead-up to the 25th anniversary of the landmark United Nations Security Resolution 1325 on Women, Peace and Security (WPS), the third annual Symposium of the RN-WPS 鈥 held at the University of Ottawa from February 8-10 - centered on the theme 鈥淏ecause We Must鈥. Rebecca Tiessen, Director of the Gender, Peace and Security Collaboratory, University of Ottawa was the host and co-organizer.