Study. The danger of the theory of Pre-Tribulation Rapture. By Fabian Massa
 http://www.tesorosdesabiduria.com/2015/02/definiciones-la-gran-tribulacion-y-el.html; http://www.tesorosdesabiduria.com/2015/02/definitions-great-tribulation-and-day.html
  After Muhammad there have been 11 Imams. The last Hasan ibn Ali ibn Abi-Talib lived between 625 and 670 AD The twelfth and final will be the Great Mahdi.
 The comparative table between the main characteristics between the Mahdi and the Antichrist can find them on http://www.lasemana70.com/2013/11/study-el-gran-mahdi-islamico-y-el.html
Mahmoud Ahmadinejad, Islamic State, Boko Haram, Great Chaos, Great Mahdi, End Times.