If we go by the WT interpretation of Daniel, the logical king of the north would now be al quaeda.
But it is quite strange to identify the king of the south as anglo-america when historically and politically, England and America acted as foes of the real king of the south: Rome, which is still standing as the roots of our western Christian civilization.
The so called anglo-american power is more fit as the king of the north, trying to pass as the king of the south since the famous french revolution that debilitated the whole continent costing over 6 million lives and that ironically catapulted Britain as the new world power.
So at this point, we can safely conclude that the king of the south is the natural heir of R-O-M-E, and that the king of the north is Wall Street or the usur-per.
It is clear is that the king of the south is the one linked with God's people and that means that the king of the north are their enemies, whoever they might be.