One of US President Joe Biden’s top aides was forced to postpone a trip to Saudi Arabia to discuss relations with Israel after he cracked a rib, the White House said Wednesday. National Security Advisor Jake Sullivan’s visit was part of a bid by Washington to push ally Riyadh to normalise ties with Israel once the Gaza war is over. “Jake was planning to head to the region this week, that trip has been postponed. He’s recovering from a cracked rib and that has affected his ability to travel,” White House spokesman John Kirby told reporters. He did not say how Sullivan – Biden’s point man on all…