In recent days Prime Minister David Cameron signalled a possible change of the Government's policy towards armed intervention in Syria. He said that the UK should “step up and do more” in the fight against Isil in Iraq and Syria. That’s all fine and well. In Ahrar Al-Sham we have lost 700 of our fighters in battles against IS since January 2014, and we and our allies are holding a 45km front line against Isil in Aleppo. We know what it is like to confront the menace of Isil. But Cameron should be aware that any further undermining of the Sunni Arab interest in the region in favour of Iran and its proxies will only empower Isil. We believe that Isil is not only a security or military threat but a social and ideological phenomena that needs to be confronted on multiple levels and that requires a national Sunni alternative to both Assad and Islamic State.