Syria's war-ravaged northwest woke up to relative calm Friday, its skies free of warplanes for the first day in months, following a Russian-Turkish ceasefire deal.

Rare calm in Syria's Idlib after ceasefire deal

Turkey's foreign minister said Ankara would launch a new military operation in northeast Syria if the area was not cleared of what he called terrorists, state-owned Anadolu agency reported on Monday.

Turkey threatens new Syria operations; directs US, Russia to 'fulfill agreement'

The Russian defence ministry said today that around 300 more Russian "military police" have arrived in Syria nearly a week after President Putin and Turkey President Erdogan concluded an agreement to bring hostilities to an end in northern Syria.

Military police have arrived in Syria to help Kurdish forces withdraw: Russia

The four-day old peace plan was brokered by Russia and Turkey

Syrian rebels suspend peace talks over 'violations' by government forces