NEW YORK -- On the eve of high-level meetings for the United Nations' general assembly, Secretary of State Hillary Clinton attended an event on Monday afternoon designed to highlight the importance of women's participation in public life.Together with a selection of major female world leaders, including Catherine Ashton, the European Union's top diplomat, and Michelle Bachelet, the former president of Chile and the head of U.N. Women, Clinton put her name to a document calling for developing countries -- especially in the changing Middle East -- to clear the way for women to hold leadership roles./.../