Euro debt crisis prompts questions over collateral

Long-held financial principles have been turned on their head by the eurozone debt crisis. Once, corporate debt was considered more risky than sovereign bonds, which were largely assumed to be risk-free. This is no longer the case. The amount of debt racked up by various European countries has caused some to predict a restructuring of Greek bonds and raised fears about the future of the euro. While an emergency loan package by the European Union (EU) and International Monetary Fund, combined