Miliband faces crunch decision on speed of greenhouse gas cuts

Energy secretary prepares new pledge for big UK carbon cuts in next decade amid potential cabinet division

Ed Miliband is facing his first key test on Labour's ambitions for global climate leadership, with a crucial decision looming on how far and how fast to cut the UK's greenhouse gas emissions.

The energy secretary is preparing a new international pledge for the UK to cut carbon sharply in the next decade, but could face opposition within the cabinet.