The Prime Minister is attempting to achieve party unity through the device of policy obscurity over EU membership, the shadow foreign secretary has said, after David Cameron for the first time set out his key priorities for change in a seven-point plan.
Douglas Alexander said: "The gap between what Tory backbenchers will accept, and what other European leaders will consider, remains unbridgeable."
"David Cameron's latest article leaves us little the wiser about what reforms he actually wants in Europe or how he plans to deliver change", he said.
"Labour has set out a different approach. We are clear that Europe must work better for Britain, and this week Ed Miliband set out real and specific reforms to achieve that."
More top news
An extra hour a day of TV, internet or computer gaming could reduce GCSE success by two grades, research claims.
David Cameron is expected to announce a new plan that will see Britain take in thousands more Syrian refugees.
Reports Ed Miliband is to rule out a return to frontline politics have been described as "speculation" by sources close to the politician.