In the mid-1990s, he pointed out, the emerging economies of Asia had been major importers of capital, borrowing abroad to finance their development. But after the Asian financial crisis of 1997-98 (which seemed like a big deal at the time but looks trivial compared with what’s happening now), these countries began protecting themselves by amassing huge war chests of foreign assets, in effect exporting capital to the rest of the world.
The result was a world awash in cheap money, looking for somewhere to go.
Most of that money went to the United States — hence our giant trade deficit, because a trade deficit is the flip side of capital inflows. But as Mr. Bernanke correctly pointed out, money surged into other nations as well. In particular, a number of smaller European economies experienced capital inflows that, while much smaller in dollar terms than the flows into the United States, were much larger compared with the size of their economies.