The stakes are enormous: how a prolonged Iran war could shock the global economy.

“There are risks from higher oil prices longer term. But this is a tail risk,” one US-based fund manger said after the airstrike killing Iran’s supreme leader, Ayatollah Ali Khamenei. “History has shown time and time again that geopolitical flare-ups like this tend to be short-lived. This one should prove to be no exception.’’

