What happens to God's kingdom when Satan is released for a little while?
When Satan is released for a little while, God's eternal kingdom is interrupted, but then comes the new heaven and the new earth, and His kingdom continues on into eternity. His dominion shall not pass away and His kingdom shall not be destroyed.
Les explains that God the Son comes before the Ancient of Days, God the Father, and is given dominion, glory, and a kingdom. He will return to earth, smite the Gentile empires that have been in human history for 2,600 years, destroy them, and set up His kingdom, an eternal dominion that shall not pass away. However, Les notes it will be interrupted again when Satan is released for a little while, but then comes the new heaven and the new earth, and the kingdom just continues on into eternity. His kingdom is that which shall not be destroyed.