Their job has been to examine in detail a phenomenon known as electro-magnetic pulse (EMP) that could be used by our enemies like Iran to effect such devastation.

CENTERFORSECURITYPOLICY: EMP and you

Whether it persuades investors that European banks will be strong enough to withstand possible losses as and when eurozone countries fail to repay all they owe, well that won't be known till the detail is published next week of how much individual banks will have to find.

BBC: Eurozone banks to raise more than 100bn euros