The International Monetary Fund has a new managing director. Her name is Christine Lagarde, and she is the first woman to head the IMF, taking over for Dominique Strauss-Kahn. Her reign begins with some obstacles, namely Greece on the brink of defaulting. Liz Alderman, chief business correspondent for The International Herald Tribune, the global edition of The New York Times, tells us more about who Lagarde is, and whether or not she might be able to stave off the Greek crisis.