US
Turkey hosts 3.6 million refugees that have fled the eight-year war in Syria
Both the SOHR and SDF reported heavy clashes near the city of Tel Abad
Analysts call the scheme of a safe zone 'unrealistic'
As Turkey’s purchase of the Russian S-400 missile system in July raised the prospect of US sanctions
Turkish president says could implement plans 'within a few weeks' to remove Kurdish YPG forces from Syrian border
Blames Syria's Kurds for the proposal
As Turkish and US officials agreed to establish a joint operations centre to oversee a safe zone
Four children were among the dead in the overnight strikes