Revelation 17: 12 – 14: And the ten horns which thou sawest are ten kings, which have received no kingdom as yet; but receive power as kings one hour with the beast. These have one mind, and shall give their power and strength unto the beast. These shall make war with the Lamb, and the Lamb shall overcome them: for he is Lord of lords, and King of kings: and they that are with him are called, and chosen, and faithful.
With America declining from superpower status, Rome will rule the world during the Tribulation with the allegiance of ten powerful world leaders who will give their economies and militaries (their power and strength) to Rome to carry out the will of Rome. These ten world leaders will rule with dictatorial power (a dictator is an uncrowned king), and their combined military strength will be used by Rome to invade Israel during the Tribulation and destroy two-thirds of the Jewish population (Zechariah 13: 8: And it shall come to pass, that in all the land, saith the LORD, two parts therein shall be cut off and die; but the third shall be left therein.).
As the Tribulation rolls into Armageddon, Christ will return to the earth with His Bride to set up His kingdom on the earth, touching down in the land of Israel. These armies of Rome will attempt to face-off in battle with the glorified Christ and His glorified Bride, but will be destroyed by the power of the spoken Word (Revelation 19: 19 – 21: And I saw the beast, and the kings of the earth, and their armies, gathered together to make war against him that sat on the horse, and against his army. And the beast was taken, and with him the false prophet that wrought miracles before him, with which he deceived them that had received the mark of the beast, and them that worshipped his image. These both were cast alive into a lake of fire burning with brimstone. And the remnant were slain with the sword of him that sat upon the horse, which sword proceeded out of his mouth: and all the fowls were filled with their flesh.).
Revelation 17: 16 – 17: And the ten horns which thou sawest upon the beast, these shall hate the whore, and shall make her desolate and naked, and shall eat her flesh, and burn her with fire. For God hath put in their hearts to fulfil his will, and to agree, and give their kingdom unto the beast, until the words of God shall be fulfilled. The destruction of Rome’s armies in the land of Israel will greatly infuriate these ten kings so that they turn against Rome and burn her headquarters by destroying the Vatican with nuclear weapons.