It is not clear who the “he” speaking here is. It could be the Ancient One or that attendant who was standing around, but it is not Daniel. The 4th beast would have a kingdom, unlike any other kingdom. This kingdom would devour the whole earth, trample it down, and finally break it into pieces. This could be a reference to Alexander the Great (356-323 BCE) and the large Greek kingdom that he established.
Rather than dwell on the 4th beast, Daniel took notice of the little horn that came out of its head to replace 3 other horns. This little horn had eyes and an arrogant mouth. Somehow, it seemed greater than the others. Then Daniel saw the little horn start a war with the holy ones. In fact, the little horn was winning, until the Ancient One showed up and proclaimed judgment in favor of the holy ones of the Most High God. Finally, the holy ones gained possession of the kingdom.