The main problem of a Greek exit from the euro zone is not necessarily the direct impact on banks. I believe our government when they say that they would be able to get that under control. The real problem is the next domino. The crisis will spread unchecked to Italy. If Greece leaves the euro zone, then owners of Greek bonds will lose their entire investment. At best, the Greeks would pay them back a small part of their investment — in almost worthless drachmas.
So what kind of investor in his or her right mind would purchase Portuguese, Spanish or Italian sovereign bonds in this kind of situation? Not even a yield of 7 percent can make up for all the risk that Italy won’t be able to pay back its debt. As things now stand, Italy’s debt accounts for 120 percent of its annual GDP, growth is close to zero and the country is currently slipping into a deep recession. In fact, it’s a matter of mathematical inevitability that Italy won’t be able to service its loans if interest rates on its sovereign debt don’t fall. Granted, there have to be reforms. But reforms don’t resolve an acute debt crisis. We’ve already learned that lesson from other crises.
via Debt Crisis Contagion: The Euro Zone’s Deadly Domino Effect – SPIEGEL ONLINE – News – International.