Mordecai is given the king’s ring in place of Haman, who was hanged for his attempt to exterminate the Jews.
Esther pleas for the king to cancel the edict sent out to kill the Jews.
V11 – Mordecai writes a new decree that gives the Jews the same rights to kill and plunder from anyone who attempts to kill them. This is how he counterbalanced the first edict. (edicts could not be repealed as that would admit that the king was wrong)