The King-Priest of Psalm 110 in Hebrews

The Kingdom of David has been the focus of disagreement among Biblical interpreters practically since the ascension of Christ. Since Christ was enthroned at the right hand of God the Father when he ascended, many believe he began ruling from that throne at that time. But is this kingdom over which he rules the Davidic kingdom? Reformed scholars say yes; dispensational scholars say no. A new breed of dispensational scholars say yes and no. These "Progressive Dispensationalists" say Jesus has inaugurated the Kingdom of David but will return to the earth to consummate this kingdom with a millennial reign from Jerusalem. Are they right? This book uses Psalm 110 in the Old and New Testaments to find an answer.