I believe that Haggai 2:6-9 is a prophecy about the coming of the kingdom of God, most likely being a reference to the ministry of Christ and the establishment of the church.  Evidence for this interpretation is found, particularly, in 2:9, “And in this place I will grant peace.”  I see parallels here with Isaiah 2:1-5, which is unambiguously a prophecy about the church, but may also have ramifications for the final coming of Jesus.  Also relevant is the description that this event will bring in “all nations.”  Again, this is a prophecy of the church.

John Oakes