That's largely backwards. What's happened is Bank Loans -> sovereign nations exactly because of the profligate spending to which Naty refers. Some of those nations now threaten to default on those loans, hence the banks are in trouble. The applicable cases include Spain, Portugal, Greece, Italy so far. Hollande just dropped France's retirement rate to 60. Greece's is 55 BTW, Italy 57, Spain 60. More relevant is the age 55-59 employment rate:
Germany 64%
Switzerland 77%
Greece 31%
Italy 26%
Spain 46%
All have aging populations, which is unsustainable in the latter three. So the 'genesis of the crisis has absolutely nothing to do with' ... bank bailouts, which are a symptom, not a cause.