Agence France-Presse: As the world takes stock of the 11th-hour climate deal hammered out in the Danish capital, many diplomats and experts are asking if injecting leaders into the negotiating process was, on balance, a boon or a blunder. The question is pertinent, because it is now all too clear that the Copenhagen Accord was not the planet-saving end point once advertised. Rather, it has become just another way station on the long and winding road toward what most countries claim to want: a …