David Cameron has urged wavering Labour MPs to back military intervention in Syria, telling them to "vote on the basis of the arguments".
The Prime Minister said there was a "compelling" case for airstrikes and insisted MPs would allow the country to do the "right thing" if they supported them.
Jeremy Corbyn is struggling to contain a shadow cabinet revolt after the Labour leader said he could not support RAF action against Islamic State in Syria.
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Speaking in Malta, where he is attending a Commonwealth summit, Mr Cameron said: "I believe there is a compelling case to take the effective action to keep our country safe."