 An IMF reports says:even as we need more international cooperation on multiple fronts, we are facing the specter of a new Cold War that could see the world fragment into rival economic blocs.And warns:Estimates of the cost of fragmentation from recent studies vary widely. The longer-term cost of trade fragmentation alone could range from 0.2 percent of global output in a limited fragmentation scenario to almost 7 percent in a severe scenarioroughly equiva... 