Welcome to Aleppo, Syria. The relentless bombardment. The curse of barrel bombs. The growing list of casualties. Behind every statistic, there is almost unimaginable human suffering.
A British actor who abandoned his Hollywood career to fight Islamic State has returned to Syria for a second time as a volunteer.
The middle-class Briton dubbed "Jihadi Jack" tells Channel 4 News in an exclusive interview that he travelled to Syria to study and has "no regrets"- while insisting he is "currently" not a fighter.
Russian forces begin pulling out of Syria after a six-month military campaign supporting President Bashar al-Assad's government.
More than a quarter of a million children are living in besieged parts of Syria and are enduring constant fear because of the deadly violence around them, according to Save the Children.
Russia rejects Turkish claims is has committed "an obvious war crime" following the deaths of up to 50 people in bombing attacks on hospitals and schools in Syria.
More than 20 refugees drown while trying to reach Greece, as German Chancellor Angela Merkel visits Turkey to discuss how to respond to the latest migrant surge caused by fighting in Syria.
Jack Letts, nicknamed "Jihadi Jack" by some newspapers, suffers from a serious mental disorder, according to his parents, Channel 4 News can reveal.