The most dangerous clashes Syria has seen since the fall of President Bashar al-Assad'

Sky News' Alex Crawford has been reporting live from Sweida - the city at the heart of the sectarian fighting where 30,000 people are trapped by the violence.

The streets of Sweida that they passed through were strewn with bodies, including some with bullet wounds in the back of the head and others set on fire.

The Syrian government has called on all sides to respect a ceasefire.