Brown. She also received the support of the five countries on the bureau of the UNDP board (Iran, Haiti, Serbia, The Netherlands and Tanzania) and was unanimously confirmed by the General Assembly on 31 March. She was sworn in by UN Secretary-General Ban Ki-moon on 27 April 2009. In this position, Forbes deemed her the 23rd most powerful woman in the world. In 2013, Forbes upgraded her position to 21st most powerful woman in the world after she was appointed to administer UNDP for a second term and for her potential future as UN Secretary General. She was the only New Zealander to make the list. Clark was recognised for her managerial style of leadership. During her tenure, she was an advocate of China's Belt and Road Initiative. She worked to reform the administration and bureaucracy of UNDP, with an emphasis on greater transparency in the organisation. The Publish What You Fund campaign ranked UNDP as the most transparent aid organisation in the world in 2015 and 2016, under Clark's administration. In February 2015, Clark visited Guinea, Liberia and Sierra Leone to express solidarity with those working to prevent the spread of Ebola. During her tenure, the ratio of women to men at UNDP reached 50%, including at the most senior level of the organisation. On 24 May 2016, a Foreign Policy article alleged that Clark's tenure as Administrator had "left a trail of embittered peers and subordinates", and accused her of "undercutting the UN's promotion of human rights". The article centred on an allegation that her senior staff retaliated against a critical report of the UNDP by forcing out an official who had participated in the investigation. Both the UNDP and Clark have denied the claims. On 26 January 2017, Clark announced that she would not seek re-election as UNDP Administrator after the completion of her four-year term. She said it had been an "honour and privilege" to have served in the role. She left UNDP on 19 April 2017. United Nations Secretary-General selection In January 2014, a Guardian interview with Clark raised the possibility that she could take over as UN Secretary-General after Ban Ki-moon's retirement in 2016. She did not confirm her interest, but commented: "There will be interest in whether the UN will have a first woman because they're looking like the last bastions, as it were." She also said in the same interview that: "If