Jesus answered, “My Kingdom is not of this world. If My Kingdom were of this world, then would My servants fight, that I should not be delivered to the Jews. But now is My Kingdom not from hence.”
Right now it isn't...But it will be...For a thousand years...
Teh number 1000 as used in the book of the Apocalypse of St John signifies a very long period, not a literal 1000 years