UNDP chief talks about gender and leadership with Forbes magazineListen /
Helen Clark, the Administrator for the United Nations Development Programme (UNDP), ranks 21st on the Forbes' list of the World's 100 Most Powerful Women.
Before heading the UN agency in 2009, she was New Zealand's first female Prime Minister a decade earlier and held the office for three consecutive terms.
Helen Clark says "It was tough getting to the top". But first, she gives Forbes' journalist Moira Forbes a short version of her long job description.