I beleive, he is referring to the BLASPHEMOUS dome of doom built by a fictitious religion on the holy ground where the temple once stood. But fear not, the dome of the crock is but a temporary obstruction.
I burn inside as many other Christians do, every time I see the landscape of Jerusalem with that dome standing out like a golden insult to my savior.
Did you ever stop to think that the Moslem who paid for the Dome of the Rock didn't have enough money to pay for a full Temple restoration, but if he had, he would have done it.
He built the Mosque over the heel stone of the Altar for the glory of God.
You may disagree with him on many things, but that's not one of the things to get upset about.