The euro survived crises unimagined at its founding in 1992, giving European countries a common currency.  First there was the financial meltdown of 2007-2009, the sovereign debt crisis of 2010-2012, the pandemic and the Russian invasion of Ukraine.  The European Central Bank (ECB) pushed back against these ill winds with dramatic policy innovations, like buying up vast amounts of debt and providing large loans to banks.  In the midst of turmoil those seem to have been the right things to do.  Now, however, is it expected that the ECB will intervene routinely, expanding the limited mission (to use interest rates to pursue price stability) it was given at its birth?  That is a key question going forward.  Our guest, Stanford professor, John Cochrane, along with co-authors Luis Garicano and Klaus Masuch, provide prescriptions for maintaining this monetary union in their new book, “Crisis Cycle:  Challenges, Evolution, and the Future of the Euro.”