World shares surge and oil prices slip after Trump claims a breakthrough in Iran war talks

World shares advanced on Friday, tracking big Wall Street gains, while oil prices slipped after U.S. President Donald Trump claimed there was a breakthrough in talks to end the Iran war. Investors in the U.S. and elsewhere were awaiting the debut Friday on Wall Street of SpaceX, Elon Musk’s rocket company, which is set to become the largest IPO on record, raising around $75 billion. Samsung Electronics, South Korea's most valuable company, advanced 7.9%.