The twin crashes in US commercial real estate and the US bond market have collided with $9 trillion uninsured deposits in the American banking system. Such deposits can vanish in an afternoon in the cyber age.

The second and third biggest bank failures in US history have followed in quick succession. The US Treasury and Federal Reserve would like us to believe that they are “idiosyncratic”. That is a dangerous evasion.

Almost half of America’s 4,800 banks have already burned through their capital buffers. They may not have to mark all losses to market under US accounting rules but that does not make them solvent. Somebody will take those losses.