" The economy and financial markets are becoming global, while monetary policy and financial supervision and regulation are conducted at the country level by national authorities. This is what the sovereign state is all about. For the foreseeable future, it is unrealistic to imagine that the authorities in large countries will conduct monetary policy or financial supervision and regulation for the sake of global stability. The gap between the reality of the global economy and the policy-making institutions is the essential source of the problem we are faced with for many decades to come. Most problems derive from the fact that
(1) central banks lack the incentive to 'internalize' the international spillover from their own conduct of monetary policy, (2) there is no global lender of last resort that is really worthy of that title, and (3) financial institutions tend to consume the services of financial stability excessively by not internalizing the impact of their own behavior on financial stability - the 'tragedy of the commons. "

― , Tumultuous Times: Central Banking in an Era of Crisis