Who says sovereign bonds need to be risk free anyway?
Absolutely! Default, and we'll just charge more next time. Whatever. Move on.
The motivation for this extremely anti-default push has not been clearly enough laid out, methinks. Bonds, government or not, are an investment. You think I am 100% the stocks I bought in a Ukrainian egg farm will not go bust? Hell no. All who invested in Greek government bonds should have done their homework.