Islam was never a caretaker empire for the righteous as Babylon is, and the book of Rev. deals with the end of Babylon, not of Islam, which Babylon conquers, by intrigue and force where necessary.
Jer 50:1 The word that the LORD spake against Babylon and against the land of the Chaldeans by Jeremiah the prophet.
Jer 50:2 Declare ye among the nations, and publish, and set up a standard; publish, and conceal not: say, Babylon is taken, Bel is confounded, Merodach is broken in pieces; her idols are confounded, her images are broken in pieces.
Jer 50:3 For out of the north there cometh up a nation against her, which shall make her land desolate, and none shall dwell therein: they shall remove, they shall depart, both man and beast.
Jer 50:4 In those days, and in that time, saith the LORD, the children of Israel shall come, they and the children of Judah together, going and weeping: they shall go, and seek the LORD their God.
Jer 50:5 They shall ask the way to Zion with their faces thitherward, saying, Come, and let us join ourselves to the LORD in a perpetual covenant that shall not be forgotten.
Rev 18:1 And after these things I saw another angel come down from heaven, having great power; and the earth was lightened with his glory.
Rev 18:2 And he cried mightily with a strong voice, saying, Babylon the great is fallen, is fallen, and is become the habitation of devils, and the hold of every foul spirit, and a cage of every unclean and hateful bird.
Rev 18:3 For all nations have drunk of the wine of the wrath of her fornication, and the kings of the earth have committed fornication with her, and the merchants of the earth are waxed rich through the abundance of her delicacies.
Rev 18:4 And I heard another voice from heaven, saying, Come out of her, my people, that ye be not partakers of her sins, and that ye receive not of her plagues.
Rev 18:5 For her sins have reached unto heaven, and God hath remembered her iniquities.
LA