'Throne of His Kingdom' in the Bible

In those days, when king Ahasuerus sat upon the throne of his kingdom, which was in Shushan the fortress,

{ And it will be in the third day, Esther will put on dominion, and she will stand in the enclosure of the king's house, the interior before the king's house: and the king will sit upon the throne of his kingdom, in the house of the kingdom, before the door of the house.}