I believe the Lord has given us the Book of Revelation as a key to unlock many mysteries found in the Book of Daniel (and vice versa). Where we may become confused by certain symbols or periods of time in Daniel, I believe they are given to us in greater detail in Revelation. These two prophetic Books clarify one another. To better understand Revelation is to better understand Daniel (and the opposite as well). We have already seen the prophetic connection between Daniel 11:40 and Revelation 9:1-11 (where the king of the south is realized in the invasion of the Islamic Saracens against the Papal King in the 5th Trumpet Judgment for his idolatry) and the prophetic connection between Daniel 11:40-43 and Revelation 9:12-21 (where the king of the north is realized in the invasion of the Islamic Turks against the Papal King in the 6th Trumpet for his continued idolatry). Today we see the Papal King's last stand in Daniel 11:44-45.