In a report entitled "Worst-case debt scenario", the bank's asset team said state rescue packages over the last year have merely transferred private liabilities onto sagging sovereign shoulders, creating a fresh set of problems.
Overall debt is still far too high... it must be reduced by the hard slog of "deleveraging", for years.
"As yet, nobody can say with any certainty whether we have in fact escaped the prospect of a global economic collapse," said the 68-page report, headed by asset chief Daniel Fermon.
It is an exploration of the dangers, not a forecast.