World leaders call for lasting ceasefire for Syria

The heads of France, Germany, Russia, and Turkey met in Istanbul on Saturday for a major summit on Syria.

World leaders stressed the importance of a lasting ceasefire in Syria, and said a committee to create a new constitution should meet by the end of the year.

Back in September, Russia and Turkey agreed to establish a demilitarised zone in Idlib province.

World leaders also reinforced on Saturday the need to create conditions throughout Syria for the safe and voluntary return of refugees.