France has said it would like the permanent members of the UN Security Council and regional countries, including Arab states and Iran, to coordinate action against Islamic State militants.
"In our minds and we hope that it will be possible, Foreign Minister Faurent Fabius said.
The UN Security Council's five permanent members are the US, UK, France, Russia and China.
A British family have told ITV News of their devastation after discovering a close relative is fighting with the Islamic State in Iraq.
A French journalist who was held hostage with James Foley in Syria has told ITV News it was "devastating" to see his murder.