Christine Lagarde, the first woman to head the International Monetary Fund, began her first day on the job today. She takes over as the trial of the organization's former managing director Dominique Strauss-Kahn is in turmoil and the fund faces a number of internal and external problems. Highlighting her primary challenges going forward, a Reuters report cites the European debt crisis, embroiling Greece and to a lesser extent Portugal and Ireland, and granting more voting power to developing countries as her key issues. Becoming the organization's first woman leader since its founding in 1944, Lagarde won the support of the U.S., EU, and emerging countries such as China, India and Brazil to beat out Mexuco's Augustin Carstens. The AP caught video of Lagarde entering the IMF's Washington headquarters today: