"This CTBTO Faces interview is with Ana Teresa Dengo, Costa Rican Permanent Representative to the United Nations in Vienna since 2006. In this function, she chaired the CTBTO's main Member States' body in 2007 and 2012. Before, Dengo worked at the CTBTO from 1998 to 2006. In her interview, she explains her country's tradition in promoting disarmament and the merits of regional treaties such as the Tlatelolco Treaty, which bans nuclear weapons from Latin America. Dengo identifies the need for innovative diplomacy to overcome the current challenges facing the Comprehensive Nuclear-Test Ban Treaty. She also advocates a stronger participation of women in arms control and related sciences."