It is not only the U.S. economy that is in peril right now. …Europe is struggling to prevent the sovereign debt problems of its peripheral Euro-zone economies from spiraling into a full-fledged banking crisis… Meanwhile, China and other large emerging economies… are beginning to experience slowdowns…Nor is renewed recession the only threat we now face. Even if a return to negative growth rates is somehow avoided, there will remain a real and present danger that Europe and the United States alike fall into an indefinitely lengthy period of negligible growth, high unemployment and deflation, much as Japan has experienced over the past 20 years following its own stock-and-real estate bubble and burst of the early 1990s.
via Roubini: Moving From the Post-Bubble, Post-Bust Economy to Growth | Credit Writedowns.