Ultra-low interest rates have become an endemic and potentially problematic characteristic of the global economy. Central banks in the euro area, the United States, Japan and Australia have bet on lowering interest rates to increase inflation, but despite their efforts, core inflation remains...

The IMF's Interim Committee recently for the first time discussed the creation of a “Substitution Account” to convert certain amounts of excess reserve currencies into SDRs. This issue is likely to be on the agenda of the next annual meeting of the IMF in the fall of this year. Prof....