The UNFCCC wouldn’t be the UNFCCC if the United States of America didn’t ruffle some feathers. So, right on cue, Friday’s intervention by US lead negotiator Jonathan Pershing in the ADP ambition roundtable certainly did the trick by labelling, yet again, the UNFCCC as a long and winding road to nowhere. This comes less than a month after Dr. Pershing's boss, Todd...



