Fallon said that it was " illogical " for the UK not to bomb ISIL in Syria , for the organisation does not " differentiate between Syria and Iraq " and is " organised and directed and administered from Syria " . Following the terrorist attacks on Paris in November 2015 , for which Islamic State claimed responsibility , Cameron began pushing for a strategy for the Royal Air Force to bomb Syria in retaliation . Cameron set out his case for military intervention to Parliament on 26 November , telling MPs that it was the only way to guarantee Britain 's safety and would be part of a " comprehensive " strategy to defeat IS . On 3 December 2015 MPs voted 397 – 223 in favour of launching air strikes against ISIL targets in Syria . The vote for military action was supported by all but seven members of the Parliamentary Conservative Party , as well as 66 Labour MPs who backed the government in defiance of their leader , Jeremy Corbyn , who had expressed his opposition to air strikes
terrorist attacks on Paris
November 2015 Paris attacks
David Cameron