I hope that this time, even David Cameron will face facts.
If we are at war with IS, then we are at war with Turkey, with Saudi Arabia, with Qatar, with Bahrain, with Kuwait, with Oman, and with the Emirates.
But we are at war alongside (indeed, for) Assad, alongside Russia, alongside Iran, alongside Hezbollah, and probably alongside China.
So, in the light of these facts, are we at war with IS? That is not a rhetorical question.