Oil prices hit their highest since November on Tuesday after Washington announced all waivers on imports of sanctions-hit Iranian oil would end next week, pressuring importers to stop buying from Tehran and further tightening global supply. SEE MORE Cobalt, however, faces bigger challenges than lithium, which has seen bigger price gains over the past two years amid lack of certainty over new supplies, stockpiling and traders taking speculative positions. SEE MORE A Chengdu-based company that has invested in a California mine could become an unlikely victim of the ongoing US-China trade war, as the two nations square off on the trading of rare earth materials, according to analysts. SEE MORE World oil prices jumped to near 6-month highs on Tuesday as the United States tightened sanctions on Iran, sending shares of energy companies higher and boosting currencies of several major crude producers. SEE MORE Creditors banging at the door? Financial collapse imminent? All part of the fun for corporate turnaround specialist Amanda Lacaze. SEE MORE