>> Syria's army and allied forces battling their way towards a besieged garrison in the eastern city of Darazul. Making rapid advances as the Islamic State forces surrounding it collapse. About 93,000 people are trapped in the government controlled enclave, which includes the military garrison and airport and much of the city of Deir ez-Zor.
For years they have lived on food air dropped by the UN. With the Syrian army and its allies now trying to break through Islamic State lines right on the edge of the army base, people in the enclave have reportedly taken to the streets to celebrate. Russian air power has helped in this battle, as in a string of other victories won by Syrian President, Bashar al-Assad, over the last year.
As fortunes change in Syria's civil war, Islamic State is on the retreat, there and in neighboring Iraq. It seized swaths of both countries in 2014 and declared them a counter fate, ruled from Mussel. Now it has been driven out of Mussel and in Syria it's falling back on territory it holds in the Euphrates Valley, on either side of Deir ez-Zor.
Pro government forces are also fighting to eradicate a large Islamic State enclave in central Syria.