Even before I went to the UN, I often would want to say something in a meeting - only woman at the table - and I'd think, 'OK well, I don't think I'll say that. It may sound stupid.' And then some man says it, and everybody thinks it's completely brilliant, and you are so mad at yourself for not saying something.
But I do not believe that the world would be entirely different if there were more women leaders. Maybe if everybody in leadership was a woman, you might not get into the conflicts in the first place. But if you watch the women who have made it to the top, they haven't exactly been non-aggressive - including me.