After surging above $100 a barrel on Monday, oil falls closer to $90 - but remains above pre-war levels. Trump also says he will hit Iran "twenty times harder" if they block the Straits of Hormuz.

A leader who has never been fully tested takes the helm in Iran when its theocracy faces its greatest test in five decades. Continuity and connections have pulled Mojtaba Khamenei, 56, to the top ...