Syrian army edges towards Islamic State bastion, jets hit rebel towns

Syrian government forces were poised to advance into the Islamic State stronghold of Raqqa province and allied Russian jets kept up air strikes on rebel-held towns north of Aleppo, the Syrian Observatory for Human Rights reported on Saturday.
An advance into Raqqa would re-establish a Syrian government foothold in the province for the first time since 2014 and may be aimed at pre-empting any move by Saudi Arabia to send ground forces to fight Islamic State militants in Syria.
Russia is pressing ahead with its four-month-old air campaign in support of President Bashar al-Assad ahead of "a cessation of hostilities" agreed by major powers on Friday. The agreement is due to come into effect in a week.

The Syrian army announced the capture of more ground in the northern Aleppo area, where its advances backed by allied Lebanese Hezbollah and Iranian fighters have cut the main rebel supply route from Turkey into opposition-held parts of Aleppo.
If its forces retake Aleppo and seal the Turkish border, Damascus would deal a crushing blow to the insurgents who were on the march until Russia intervened last September, shoring up Assad's rule and paving the way to the current advances.
The...