The boss of one of the world's biggest banks has warned US interest rates could climb to 8%. Jamie Dimon, the head of JPMorgan Chase, said his bank has prepared for interest rates to jump because of "persistent inflationary pressures". Central banks around the world have been busy raising rates in a bid to dampen rising prices. But with price rises in some countries now gradually slowing, central banks may begin to lower interest rates. In his annual letter to shareholders, Mr Dimon said that the bank was ready for a "very broad range" of rates, from 2% to 8% or even higher, potentially pushed up because of high ... (full story)