If the hardline Islamic regime now controlling Iran was to be taken down and replaced with someone like Reza Pahlavi, Crown Prince of Iran (Persia) who promises elections and wants Israel to join the Cyrus Accords at a time of peace with Iran no longer financially supporting the Hezbollah in Lebanon, the Hamas in Israel, & the Houthis in Yemen, and they allowed the Israelites to build their temple in Jerusalem just like King Cyrus of Persia (Iran did) then it would be a repeat of history.
Ezra 1:1-2, "Now in the first year of Cyrus king of Persia, that the word of the LORD by the mouth of Jeremiah might be fulfilled, the LORD stirred up the spirit of Cyrus king of Persia, that he made a proclamation throughout all his kingdom, and put it also in writing, saying, Thus saith Cyrus king of Persia, The LORD God of heaven hath given me all the kingdoms of the earth; and he hath charged me to build him an house at Jerusalem, which is in Judah."
Ezra 5:13, "But in the first year of Cyrus the king of Babylon the same king Cyrus made a decree to build this house of God."
Ezra 6:3-5, "In the first year of Cyrus the king the same Cyrus the king made a decree concerning the house of God at Jerusalem, Let the house be builded, the place where they offered sacrifices, and let the foundations thereof be strongly laid; the height thereof threescore cubits, and the breadth thereof threescore cubits; With three rows of great stones, and a row of new timber: and let the expenses be given out of the king's house: And also let the golden and silver vessels of the house of God, which Nebuchadnezzar took forth out of the temple which is at Jerusalem, and brought unto Babylon, be restored, and brought again unto the temple which is at Jerusalem, every one to his place, and place them in the house of God."Ez 6:14-15, "And the elders of the Jews builded, and they prospered through the prophesying of Haggai the prophet and Zechariah the son of Iddo. And they builded, and finished it, according to the commandment of the God of Israel, and according to the commandment of Cyrus, and Darius, and Artaxerxes king of Persia. And this house was finished on the third day of the month Adar, which was in the sixth year of the reign of Darius the king."