The monthly death toll in the strategic port city was up 164% in June-August from the first five months of the year.
Announcement added foreign ministers would "speed up" preparations for face-to-face between two men.
The Syrian army's offensive to retake the rebel-held east of the capital Damascus continues apace with scant regard for innocent casualties.
The UK-based Syrian Observatory for Human Rights says children were among the dead on Saturday in the besieged enclave of Eastern Ghouta near Damascus
At least 23 people have been killed by airstrikes in Eastern Ghouta as Syrian government forces intensify their efforts to retake the rebel stronghold.
Militants have killed hundreds of police and soldiers over recent years in Egypt but appear to have shifted tactics with Friday's attack on a mosque
Orphaned girl has shone a light on a forgotten conflict.
Thousands of Rohingya muslims are escaping the latest violence in Myanmar by crossing the border with Bangladesh. 98 people have been killed during clashes since friday.
Thousands of people have fled Mosul’s densely-populated Old City over the past 24 hours, Iraq state TV says.
But thousands more are believed to be
The war ravaged old city of Mosul
Civilians and security forces expressed joy as fresh advances were announced
Iraqi authorities believe victory in the city is imminent and are planning a week of nationwide celebrations
Aid workers are reporting higher levels of malnutrition as desperate families flee ISIL
Iraqi forces believe the city will be recaptured from so-called Islamic State within days
What many believe to be ISIL's last stand in Iraq is coming to a head.
The town is a key point on the army's route to the city of Hama.
With nearly 400,000 displaced people from the battle of Mosul refugee camps are overwhelmed with the latest exodus from the east of the city.