Labour has lodged a complaint about David Cameron's communications chief after he accused Ed Miliband of potentially "giving succour" to President Bashar Assad's regime by deciding to force the Government into a second vote before military action is taken against Syria.
A letter has been sent to Cabinet Secretary Sir Jeremy Heywood condemning the "infantile and irresponsible" comments made by Craig Oliver.
The party has called for Mr Oliver, the Government's director of communications, to apologise and withdraw the remark.
International Development Secretary Justine Greening claimed she missed the crucial vote on Syria because she did not hear the division bell
Britain's place in the world changed with last night's Commons vote on Syria, as David Cameron spectacularly misread his own party.
It was clear the majority of MPs would not be prepared to back unilateral action by the US and Britain. Today we need to make clear why.