From Oct 18, 2011

This is not the end of the story. The end of the story is that king Achashvayrosh ruled over the entire world, 127 nations. And he sent out a proclamation over his entire kingdom that every man should be king in his house, and his family should speak "his" language. (The end of Ester 1) Now this proclamation saved the Jewish people. Because when the people saw it, the entire world said that the king is out of his mind, because everyone knows that even the lowest guy is king in his own house. There was no such thing as feminism in those days. The world was still normal 2,500 years ago, and there was no erosion of the pecking-order. So when the next proclamation came out to wipe out the Jewish people exactly 11 months down the road (The 13th of Adar) the anti-semites did not jump right away ahead of time, because they figured the king is out of his mind, so it's better to wait it out and see what happens. (Megella ibid)