Russia, Germany, France and Turkey call for lasting ceasefire for Syria

Russia, Germany, France and Turkey call for lasting ceasefire for Syria

The leaders of Russia, Germany, France and Turkey have stressed the importance of a lasting ceasefire in Syria.

The leaders of the four countries gathered for a summit in Istanbul to discuss Syria, where violence this week in the last remaining major rebel stronghold has highlighted the fragility of a deal to avert a massive government offensive.