>> The heads of France, Germany, Russia, and Turkey met in Istanbul on Saturday for a major summit on Syria, where violence this week highlighted the fragility of a peace deal. 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.
>> We are all extremely vigilant to ensure that these commitments are met, and that the ceasefire is stable and sustainable.>> Back in September, Russia, an ally of the Syrian government, and Turkey, which has long backed rebels, agreed to establish a demilitarized zone Idlib Province. But violence has continued to plague the Northwestern region.
The last rebel stronghold, as Asahd tries to regain control of the area. On Friday shelling in Idlib killed at least seven civilians. And there are fears of a new battle, which the UN has warned could be the worst of the seven-year war. World leaders also reinforced on Saturday, the need to create conditions throughout Syria for the safe and voluntary return of refugees.
> The region in and around Idlib is home to an estimated 3 million people, more than half of home have already fled to other areas.