The global economy has never seen anything like the sovereign debt bubble that we are experiencing today. The United States, Japan, and nearly every major nation in Europe are absolutely drowning in debt. We have heard a lot about "austerity" over in Europe in recent years, but debt to GDP ratios continue to rise in Greece, Spain, Italy, Ireland and Portugal. In general, most economists consider a debt to GDP ratio of 100% to be a "danger level", and most of the economies of the western world have either already surpassed that level or are rapidly approaching it. Of course the biggest debt offender of all in many ways is the United States.