Hayat Tahrir al-Sham, or HTS, made a lightning assault across Syria. Where did the rebels get the cash, weapons and training that made their takeover possible?
As Syria's economy collapsed during its civil war, the country became something of a narco state. The regime of ousted President Bashar al-Assad earned billions by trafficking in the drug Captagon.
Germany hosts almost a million Syrians who fled war and dictatorship. The toppling of the Assad regime has raised questions for exiles about their next step.
Rebels have rekindled Syria's war with a lightning offensive that seemed to come from nowhere. But multiple upheavals, beginning with the Gaza war last year, have spread conflict across the region.
Syrian rebels have swept through parts of the country at lightning pace, taking control of the the second-largest city, Aleppo. But who are they and what are their aims?
The count, by the Syrian Observatory for Human Rights, comes after more than a decade of a war that's killed at least 350,000 people and displaced millions.
Trauma surgeon David Nott has volunteered in war zones and disaster areas around the world. Now he's treating COVID-19 patients in London. He calls the pandemic a "disaster zone for the whole world."
In a "Hail Mary" operation, the Israeli military evacuated hundreds of Syrian rescue volunteer workers to Jordan amid the Syrian regime's offensive against rebel-held parts of the country.
Two cylinders dropped on the rebel-held Syrian city of Saraqeb — sending nearly a dozen people to seek medical help for nausea and other symptoms — had contained chlorine, the OPCW says.