The euro crisis remains unresolved even as financial markets may seem calm for now. The current euro regime is inherently flawed. Recent reforms have failed to turn the dysfunctional euro regime into a viable one. The investigation is informed by the "cartalist" critique of traditional "optimum currency area" theory (Goodhart 1998). Various proposals to rescue the euro are assessed and found lacking. A Euro Treasury scheme operating on a strict rule and specifically designed not to be a transfer union is proposed here as condition sine qua non for healing the euro's potentially fatal birth defects. The Euro Treasury proposed here is the missing element that will mend the current fiscal regime that is unworkable without it. The proposed Euro Treasury scheme would end the currently unfolding euro calamity by switching policy from a public thrift campaign that can only impoverish Europe to a public investment campaign designed to secure Europe's future. No mutualization of existing national public debts is involved. Instead, the Euro Treasury is established as a means to pool eurozone public investment spending and have it funded by proper eurozone treasury securities.