Stabilising the situation in the Middle East and north Africa should be the priority, Mr Cameron said.
Meanwhile the Board of Deputies has expressed horror and pain at the death of Aylan Kurdi, the three year old Syrian Kurdish boy who drowned alongside his brother Galip and their mother, Rehan off the coast of Turkey.
There was a shocked reaction after photos of Aylan's dead body appeared in the media today.
In a statement, the Board said: "Aylan's family are from Kobani, which has been subjected to some of the fiercest fighting between ISIS and Kurdish groups. We hope that the shocking photo which has made its way around the world will spur world leaders into action.
Board senior vice president Richard Verber said: "As war rages with unthinkable barbarity in the Middle East, we must be diligent in avoiding using dehumanising language when discussing this issue, particularly given the history of Jews in the UK - most of whom are descended from refugees. We must act with compassion and care towards our fellow human beings."
