John Marwood
I ♥ cryptic crosswords
The worry is this could spread and as the crisis of 2008/9 shows all countries/banks are in hock to each other.
As for what's the worse that could happen, just make sure you have big enough wheel barrow to hand!
Japan is next ....
Then Italy
Then UK
Then France
Queue jumping quite likely...
It may be getting close to asking your employer if you can be paid in cash - preferably a mix of currencies