We used to drill for the A-bomb threat… but got hit by the AAA-bomb.

Sir, I belong to that generation that Gillian Tett refers to and who in the 50s and early 60s crouched under tables preparing for the A-bomb threat, “From fire drills to firearm drills” May 31,

50 and some years later I am now wondering what drills could be useful for a society in order to avoid that kind of AAA-bomb the Basel Committee launched at our banks, when they allowed these to leverage their shareholder’s equity a mindboggling 62.5 to 1 times (or infinitely in the case of sovereigns) only because something got an AAA credit rating issued by humanly fallible credit rating agencies.