U.S. first lady Michelle Obama (R) and the wife of Britain's Prime Minister Gordon Brown, Sarah, visit Maggie's Cancer Caring Centre in west London  April 1, 2009. World leaders will have their work cut out at a G20 summit where U.S President Barack Obama makes his first major international sortie, under perhaps more pressure than anyone to show that the country where the crisis began can lead the way out. Reuters Pictures logo Reuters Pictures 38 months ago

U.S. first lady Michelle Obama (R) and the wife of Britain's Prime Minister Gordon Brown, Sarah, visit Maggie's Cancer Caring Centre in west London April 1, 2009. World leaders will have their work cut out at a G20 summit where U.S President Barack Obama makes his first major international sortie, under perhaps more pressure than anyone to show that the country where the crisis began can lead the way out.