Here is John MacArthur's put: http://www.biblebb.com/files/MAC/sg2369.htm
"And the fourth kingdom shall be as strong as iron, inasmuch as iron breaks in pieces and shatters everything; and like iron that crushes, that kingdom will break in pieces and crush all the others." (Dan. 2:40)
There is no such "revival" pictured at all in Daniel. MacArthur sees a "revival" because of his hermeneutical bias regarding the end times. In reality Daniel only sees the one and only, original Roman Empire. It followed on the Greek, etc empires. It has passed into history, and now the Kingdom of Christ is being established throughout the world. There will be no revival. That is the plain reading of Daniel 2.