The euro area lacks a common safe asset, leaving banks to rely on bonds issued by their own countries and thus magnifying fiscal crises and contributing to financial fragmentation. To address this problem, an influential proposal advocates sovereign-bond backed securities, the most senior of which would play the role of safe asset. This column, which introduces a new CEPR Policy Insight, investigates whether criticism of the proposal’s reliance on securitisation is justified and compares it with alternatives that would not require tranching.