In the first part of Daniel 11, he records a prophecy that has already been fulfilled (future for Daniel, past for us). The last part (beginning with verse 2) he records a prophecy that will be fulfilled in our future. 

Daniel 11:21-23
"He will be succeeded by a contemptible person who has not been given the honor of royalty. He will invade the kingdom when its people feel secure, and he will seize it through intrigue. Then an overwhelming army will be swept away before him; both it and a prince of the covenant will be destroyed. After coming to an agreement with him, he will act deceitfully, and with only a few people he will rise to power.

This contemptible person is the Antichrist who has no legitimate right to the power that he will take during the last days. The Antichrist will take over as the people have been lulled into a false sense of security. Many more details concerning the battles between the armies of the north and the south can be found in chapters 12-15 of the book These Last Days. 

Some great insights are in these passages in Daniel concerning the spiritual realm.  These phrases, "prince of the Persian kingdom", "chief prince", "prince of Greece", "your prince" are all references to high ranking angels in the spiritual realm.  Evil powers had kingdoms over the kings of the earth then, as well as now. 

Some revelations of future events were given to Daniel to be sealed until the time of the end. (Daniel 8:26, Daniel 12:9) As recorded in the book of Revelation, John was told not to seal up the words of prophecy because the time of the end is near. (Revelation 22:10) Guess that means it's nearer now!