Asian markets tumble as US-Iran fighting lifts oil and bond yields ↧ ↧ Asian markets tumble as US-Iran fighting lifts oil and bond yields Asian stocks slumped on Wednesday after renewed U.S. airstrikes on Iran pushed oil prices ‌to a five-week high and drove the U.S. 10-year Treasury yield to its highest level in almost three years, extending a bond market selloff across global markets.