Every so often, because I am a conservative, some fringe group wants to enlist my support in warning the land of a sinister Jewish conspiracy to put the whole world under a Jewish ruler. Indeed, given the Left-Islamicist alliance, it seems that such sentiments are no longer a monopoly of the loony right.
But I will add my two cents worth. There is indeed an ancient, international Jewish conspiracy to put the world under the rule of a Jewish king. It's called Christianity.
Looking at Revelation 7, I am more convinced that the Apocalypse is a densely coded picture of the Christian era.
Revelation starts with 144,000 from the tribes of Israel and moves to a great redeemed multitude from every people, tongue and nation. This looks suspiciously like the spread of the Gospel from Jerusalem and Judaea, then to Samaria, then to the ends of the earth as commanded by Christ in the first chapter of Acts. The Christian faith was first announced to the world by the Jews Simon Bar Jonah, James and John the sons of Zebedee, and others in the very shadow of the Temple itself; and from them spread not only to the Jews, but also to the Greeks. And from the Greeks it spread to everyone else.
This leads me to identify the Great Tribulation described in Rev. 7:14 is, given what is recorded in Revelation 6, nothing but the general vicissitudes of the history of a world in which redemption is still and ongoing process.