PetrW, yes, I believe this is what is explained in Chapter 13. The combination beast includes previous empires closely associated with Israel. Seven heads: Egypt, Assyria, Babylon, Medo-Persia, Greece, Rome, British Empire (later Anglo-American).
The combination beast from the sea is a conglomeration of Daniel’s four beasts (except for Egypt and Assyria). This beast would have a limited lifespan of 42 months. Head with mortal wound is the British Empire, economically on its last legs. Soon afterwards the damaged head is healed. The US comes to the assistance of the UK by declaring war on Germany and entering World War I on April 4, 1917. The healed head now becomes the Anglo-American World Power. This beast with healed head would be active for 42 months = 3½ years, from April, 1917 to November, 1920 (cf. Rev. 13:1-3, 5).
A major product of the Paris Peace
Conference is the Covenant of the League of Nations, submitted in a first draft
February 14, 1919, and finally approved, in a revised version, April 28, 1919.
The League was officially brought into being January 10, 1920. The first meeting of the Assembly of the
League takes place on November 15, 1920. This date marks the dissolution of
Beast from the sea as the image of the beast becomes active (13:11, 14, 15).
As an image it turned out to be useless, ceasing operations April 20, 1946. This peace-keeping organization had attempted to take the place of God’s Messianic kingdom. Thus, in God’s eyes the image of the beast would be “an abomination” (13:14; cf. Dan. 11:31; 12:11). From the standpoint of the angel (and God), this man-made “abomination” amounts to a pathetic nonentity. True to form, it would disappear from sight in the clouds of World War II: “The beast that you saw existed once but now exists no longer” (Rev 17:8a NAB). So, as for the League of Nations, the emphasis would be on the “abomination”-part.
After the 42 months two things would have happened. The healed head of Beast from the sea would become Beast from the earth. A powerful confimation of this is Rev. 13:13, e.g., Direct Energy Weapons or DEWs. Not bad for a 2,000 year prophecy. This new beast insists on making an image, i.e., the League of Nations. Later breath was given the image, and it became a beast in its own right, i.e., Beast from the abyss or UN (in the abyss = inactive; out of the abyss = active).
So, in contrast to your elaborate constructions, I believe all the pieces of the chessboard are in place for the Great Tribulation to commence. Another interesting prophecy soon to be fulfilled is this one: "Then the kings of the earth, the officials and the generals, the rich and the powerful, and everyone, slave and free, hid themselves in caves and in the rocks of the mountains" (Rev. 6:15 CEB).