Julia Gillard was the 27th Prime Minister of Australia, serving from 2010 to 2013. Ngozi Okonjo-Iweala is the Director General of the World Trade Organization (WTO), the first woman and first African to hold the position. An economist and international development expert with more than forty years of experience, she served as Nigeria's first female and longest serving Finance Minister (seven years) and the first female Foreign Minister in 2006. She was also Managing Director of the World Bank from 2007 to 2011. She was Chair of the Board of Gavi, the Vaccine Alliance (2016-2020), the African Risk Capacity (2014-2020), and Cochair of the Global Commission on the Economy and Climate. She is the author of Reforming the Unreformable: Lessons from Nigeria (MIT Press).