On the one hand, it seemed very insightful for the Watchtower to identify the United Nations as the eighth king. After all, the Anglo-American world power was the UN's strongest advocate. But there is something that does not add up or fit into the prophetic picture. Never mind the fact that the leaders of the Watchtower have committed spiritual prostitution with the very organization they have identified as the scarlet-colored seven-headed beast from the abyss. They will answer for their unfaithfulness. Of that, you may be certain. What doesn't fit though is the fact that both the seventh and eighth kings are ruling concurrently. Except, they are not.
In spite of all the ballyhoo, the United Nations is a paper tiger. It has no real authority over sovereign nations. So, the "insight" of the seers of Bethel is actually part of the operation of Satan faking his ouster. It is all tied into that because the beast only claws itself out of the abyss as a result of the catastrophe the world will experience when the Devil and all of his angels come down in a great rage. When the eighth king begins his allotted reign of one hour the seventh king will be subject to him. All national sovereignty will be dissolved and the UN will function as a world government. That's when Christ will speak through his chosen ones.