A smoke has appeared in the End Times which we live in. A smoke has surrounded the whole world. This is one of the portents of the system of the Mahdi. Because of that smoke, the economic crisis has broken out, because of that smoke wars started and terror erupted. This smoke will go away with the appearance of the system of the Mahdi. Mahdi (pbuh) is the one who will clear away that smoke. - Harun Yahya