How harmful are the tensions between the US and Iran?

US President Donald Trump threatens to bomb Iran, whereas Tehran says it could reply.
Iran’s Supreme Chief Ayatollah Ali Khamenei has warned of a forceful response if america or its allies bomb his nation.
That follows a menace made by US President Donald Trump if there is no such thing as a deal on Tehran’s nuclear programme.
How harmful is that this standoff – and might an answer be discovered?
Presenter: Adrian Finighan
Friends:
Hassan Ahmadian – assistant professor, College of Tehran
Ali Vaez- Iran mission director, Worldwide Disaster Group
Ellie Geranmayeh – deputy director of the Center East and North Africa Programme, European Council on International Relations