Many readers have E-mailed me asking me to explain yields on bonds and sovereign credit ratings. There has been press coverage in recent days that following the downgrading of Greece, sovereign debt in the UK, France, and Spain will be downgraded unless severe “fiscal consolidation” is begun. All these places are suffering very depressed domestic conditions with high unemployment, falling per capita incomes and civil unrest looming. The last thing these nations need is for their national governments to be raising taxes and cutting spending. But the financial press are using the threats from these nefarious and undemocratic credit rating agencies to berate governments to do just that. Undermine the welfare of their citizens. Further, judging from the E-mails I have received on this issue there appears to be a lot of uncertainty in the minds of interested people about what all this means. Here is a little introduction which I hope helps.