What will happen now that the US has launched airstrikes against Isis in Syria? Even though there is no requirement for Parliament to be consulted, it is very difficult for the British government to join without some form of debate and vote in the House of Commons. And this means that a recall of Parliament before it is scheduled to sit on 13 October. The end of this week is most likely, but there remains a debate at the top of the Tory party as to whether David Cameron could win a vote supporting British action. This is surprising, given so many of those who opposed action against Assad last year have publicly said they would support it, and Labour has made many more supportive noises about its own stance. But Cameron is still queasy about trusting Labour, and the mood of his party is pretty volatile at present, with a number of the irreconcilables starting to see merit in causing trouble for him on any matter.
If Cameron can guarantee Labour support, then he could ignore those irreconcilables, who would then melt away.

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