Telegraph: For all the acres of newsprint devoted to the return to the Cabinet of Peter Mandelson, by far the most important and potentially damaging move in Gordon Brown’s recent Government reorganisation could well be his setting up of a wholly new ministry, laughably called the Department of Energy and Climate Change. Under a new Secretary of State, Ed Miliband, the new department merges two groups of officials who, over the past year, have been ever more obviously at war with each other; and …