Christine Lagarde, France's former finance minister, has officially taken over as head of the International Monetary Fund (IMF).
The first woman to head the IMF, she was picked by its 24-member board after the post became vacant following the resignation of Dominique Strauss-Kahn in May.
She told staff today: “You will be able to count on me.”
Since then, charges of sexual assault made against him by a maid in a New York hotel are expected to be dropped within the next two weeks.
Ms Lagarde beat Mexico's Agustin Carstens to the job which has a five year term and has always been headed up by a European.
She received the support of Europe and a number of emerging markets like China and India.
A lawyer by trade, one of her biggest challenges will be to deal with the EU/IMF efforts to resolve the Greek debt crisis and stop in spreading to other troubled eurozone countries like Ireland.