health of the banking sector, following the collapses of silicon valley bank, signature bank and first repbulics have been told they will need to bear the 16 billion dollar cost of a us regulator replenishing its deposit insurance fund hit by the recent failures. elon musk says that he has found a new chief executive to lead twitter. mr musk did not name the platform's new boss but said "she" would start in six weeks at which point he would become executive chairman and chief technology officer. our silicon valley correspondent james clayton has more. well, first of all, i think it is important to mention that just because elon musk has tweeted something doesn't necessarily mean it is actually true. you may remember i interviewed elon musk last month and i asked him who is going to be the next chief executive and he told me he had already made a dog chief executive. so it is sometimes difficult to know whether he is joking or not. it does seem like he is actually being serious this time. that would be a really significant moment for twitter. first of all, he said that the new chief executive is