Global oil prices surged and stock markets across Asia tumbled on Monday as the US-Israel conflict with Iran moved into its fifth week. Brent crude climbed more than 3%, rising above $115 (£86.77) per barrel, while US benchmark oil advanced nearly 2% to $101.62. The latest jump puts Brent on course for its largest monthly increase on record. Japan's Nikkei 225 dropped 2.8%, and South Korea’s Kospi ended the day down by almost 3%. The market turbulence followed weekend developments in which