thank you very much for talking to us, steven barnett, professor of i to us, steven barnett, professorom the bbc to come on to talk about this and we will let you know what they say and whether they come on and we will bring that to you. moving on now. the us treasury has moved to reassure investors after the largest bank failure since the financial crash of 2008. the collapse of silicon valley bank — a major lender to tech companies — triggered a share sell—off in other banks linked to the sector. for more on that, i'm joined now by peterjankovskis — he is vice president research andanalysis at arbor financial services. thank you forjoining us. could you talk us through and explain why this has happened with silicon valley bank? it has happened with silicon valley bank? . , , has happened with silicon valley bank? , , ., bank? it has its roots in two factors, first _ bank? it has its roots in two factors, first economy - bank? it has its roots in two factors, first economy wide | bank? it has its roots in two - factors, first economy wide interest rates have risen tremendously, which