Coruscation

It's hard to imagine now, but for more than three decades after World War II financial crises of the kind we've lately become so familiar with hardly ever happened. Since 1980, however, the roster has been impressive: Mexico, Brazil, Argentina and Chile in 1982. Sweden and Finland in 1991. Mexico again in 1995. Thailand, Malaysia, Indonesia and Korea in 1998. Argentina again in 2002. And, of course, the more recent run of disasters: Iceland, Ireland, Greece, Portugal, Spain, Italy, Cyprus.

What's the common theme in these episodes? Conventional economics wisdom blames fiscal profligacy -- but in this whole list, that story fits only one country, Greece. Runaway bankers are a better story; they played a role in a number of these crises, from Chile to Sweden to Cyprus. But the best predictor of crisis is large inflows of foreign money: in all but a couple of the cases I just mentioned, the foundation for crisis was laid by a rush of foreign investors into a country, followed by a sudden rush out.

I am, of course, not the first person to notice the correlation between the freeing up of global capital and the proliferation of financial crises; Harvard's Dani Rodrik began banging this drum back in the 1990s. Until recently, however, it was possible to argue that the crisis problem was restricted to poorer nations, that wealthy economies were somehow immune to being whipsawed by love-'em-and-leave-'em global investors. That was a comforting thought -- but Europe's travails demonstrate that it was wishful thinking.

And it's not just Europe. In the last decade America, too, experienced a huge housing bubble fed by foreign money, followed by a nasty hangover after the bubble burst. The damage was mitigated by the fact that we borrowed in our own currency, but it's still our worst crisis since the 1930s.

-- Paul Krugman.