While the US government usually acts in a collective fashion this particular action has Trump fingerprints on it: * He isn't particularly concerned with pissin

While the US government usually acts in a collective fashion this particular action has Trump fingerprints on it: * He isn't particularly concerned with pissing off allies. * He has taken a particular interest in North Korean negotiations so is likely taking more direct control on this front. * These actions demonstrate a desire to increase US negotiating leverage especially in light of the last failed summit.