Despite heated rhetoric both Iran and the US appear to be looking for the off-ramp.

Iranian officials at this week’s UN General Assembly in New York rebuffed repeated overtures from US officials for a summit between US President Donald Trump and his Iranian counterpart Hassan Rohani. For now Iran is sticking to the line that the US must return to the 2015 nuclear deal (and in particular end the third-party sanctions since last November that have crippled its oil exports and threaten...