The Sages in the Zohar Hakadosh (Holy Zohar) write that, in the Last Days, all the major historic enemies of Israel, such as Nevuchadnetzar, Sancherib, Haman (Ahmanedijad), and even Pharaoh, will all be brought back in one generation, as gilgulim (reincarnated souls), to fight against Israel one final time, this time to be destroyed forever, during the last generation of the complete and final redemption... The Zohar writes about a general gilgul -- reincarnation (return) of all rishaim (evil regimes) in the End of Days -- those who destroyed the Temples and many others as well. The specific return of Nevuchadnetzar, for example, is noted twice in Zohar Parshas Beshalach 58b... It is known that Saddam Hussein had often stated that he was Nebucadnezzar II, king of Bavel and had, on two occasions, rebuilt his palaces (due to the damage during the Iraq wars) and engraved images of the ancient king next to his own on the protective outer walls of each.
From the Forbes article above
According to the tradition, Imam Ali Ibn Abi-Talib (the prophet’s cousin and son-in-law) prophesied that at the End of Times and just before the return of the Mahdi, the Ultimate Saviour, a “tall black man will assume the reins of government in the West.” Commanding “the strongest army on earth,” the new ruler in the West will carry “a clear sign” from the third imam, whose name was Hussein Ibn Ali. The tradition concludes: “Shiites should have no doubt that he is with us.”
Sancherib would be Assad of Syria
Haman would be Ahmanedijad
Nevuchadnetzar would be Saddam Hussein
Who would Obama be? Not the Pharaoh. What about Putin?