Russian President Vladimir Putin, German Chancellor Angela Merkel, and French President Emmanuel Macron are participating in Istanbul quartet summit hosted by Turkish President Recep Tayyip Erdogan.
This year's UN General Assembly is expected to be overshadowed by the organisation's failure to produce a solution to the war in Syria.
Turkey and Russia struck a deal to prevent a Russia-backed regime attack on Syria's last major opposition bastion of Idlib.
As women, men and children who fled their countries to escape war, poverty or persecution process asylum applications and other documentation in Ankara, they are clear on one thing: home is hard to return to.
The rescue and aid group says any attack in the area could pile on the misery for millions of people who have already fled the wider war. Idlib, in the northwest, is one of the few parts of the country still held by opposition to the Assad regime.
The four reportedly quit over differences with the government on how to handle the deteriorating security situation that has seen attacks from Daesh and the Taliban escalate.
Some would suggest that our modern world has become less violent and more peaceful; the truth is more complicated and a lot more violent.
It was not immediately clear whether the Taliban had accepted Ghani's call for a truce during Eid, the annual Islamic feast of sacrifice, which officially begins on Tuesday.
Damascus and its allies continue to assault Idlib on Friday despite it being designated a ‘de-escalation zone’ in which acts of aggression are expressly prescribed. Local sources said that the strikes were carried out by the regime and Russia.
The war against Daesh ended in 2017, and roughly 70 Sunni Arab families displaced from northern Iraq's semi-autonomous Kurdish region want to go home.
Five children and three women are among those killed on Quneitra's border with Daraa province, according to the Syrian Observatory for Human Rights. The war monitor says it's unclear whether the strikes were carried by the regime or its Russian ally.
In another attack, rebels and opposition forces killed more than two dozen pro-regime fighters in Al Ateira, a northwestern stronghold of Syrian regime leader Bashar al Assad, according to the Syrian Observatory for Human Rights.
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