Alan Greenspan in the Wall Street Journal Today

Alan Greenspan has a column in the Wall Street Journal today about the current credit crisis. He discusses a number of fascinating points, including the loss of control of long term interest rates by central banks and when the credit crisis will end. Here are some excerpts.

Arbitragable assets--equities, bonds and real estate, and the financial assets engendered by their intermediation--now swamp the resources of central banks. The market value of global long-term securities is approaching $100 trillion. Carry trade and foreign exchange markets have become huge.

The depth of these markets became readily apparent in March 2004, when Japanese monetary authorities abruptly ceased intervention in support of the U.S. dollar after accumulating more than $150 billion of foreign exchange in the preceding three months. Beyond a few days of gyrations following the halt in purchases, nothing of lasting significance appears to have happened. Even the then seemingly massive Japanese purchases of foreign exchange barely budged the prices of the vast global pool of tradable securities.

In theory, central banks can expand their balance sheets without limit. In practice, they are constrained by the potential inflationary impact of their actions. The ability of central banks and their governments to join with the International Monetary Fund in broad-based currency stabilization is arguably long since gone. More generally, global forces, combined with lower international trade barriers, have diminished the scope of national governments to affect the paths of their economies.

And when the credit crisis will end:

The current credit crisis will come to an end when the overhang of inventories of newly built homes is largely liquidated, and home price deflation comes to an end. That will stabilize the now-uncertain value of the home equity that acts as a buffer for all home mortgages, but most importantly for those held as collateral for residential mortgage-backed securities. Very large losses will, no doubt, be taken as a consequence of the crisis. But after a period of protracted adjustment, the U.S. economy, and the world economy more generally, will be able to get back to business.

The rest of the article can be found here.