In the third year of Cyrus king of Persia a thing was revealed unto Daniel, whose name was called Belteshazzar; and the thing was true, but the time appointed was long: and he understood the thing, and had understanding of the vision. In the third year of Cyrus - Which answers to the first year of Darius the Mede.
The time appointed was long - וצבא גדול vetsaba gadol, but the warfare long; there will be many contentions and wars before these things can be accomplished.