Executive Director of UN Women Phumzile Mlambo-Ngcuka (C) poses for photos with actresses Reese Witherspoon (L) and Danai Gurira during an observance of International Women's Day at UN headquarters in New York, March 8, 2018. UN Secretary-General Antonio Guterres on Thursday called for action to empower women and girls on the occasion of International Women's Day. (Xinhua/UN Photo/Mark Garten)