IS ousted from Turkey border as Syria army besieges Aleppo

Rebels captured those areas last month in an assault that broke through a government siege on Aleppo's opposition-held eastern sector.

And the UK-based Syrian Observatory for Human Rights, which monitors the war, said later on Sunday that government forces had also recaptured the Artillery College and that the eastern part of the city had been cut off.

State TV reports said the push recaptured two military academy sites in the city's south that were seized by rebels last month.

Later, the source said an army unit targeted on Sunday gatherings of terrorists in al-Bajabjeh neighborhood in Daraa al-Balad area in Daraa city, leaving 8 of them dead and a number of their vehicles destroyed.

Islamic State jihadists were expelled from their last positions along the Turkish-Syrian border, Turkey said Sunday, as Syrian forces again laid seige to rebel strongholds in war-torn Aleppo.

"The development leaves about 250,000 people living in rebel-controlled parts of the city cut off from the outside world once again, and will raise new fears about a humanitarian crisis in Aleppo".

It has been roughly divided between regime control in the west and rebel control in the east since mid-2012.

President Barack Obama said earlier that the two sides were "working around the clock" on the sidelines of a summit in China, but that it was "a very complicated piece of business".

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Earlier Sunday, hopes were raised that Moscow and Washington might be on the verge of announcing a deal to halt the bloodshed.

"We're not going to rush and we're not going to do something that we think has less than what we believe is a legitimate opportunity to be able to try to get the job done", he said.

On Sunday, the United States and Russian Federation were unable to secure a ceasefire deal between Assad's government and moderate rebels that would allow for the delivery of humanitarian supplies to Aleppo.

Obama pointed to "grave differences" with Russian Federation over its support of the Syrian regime and the path forward. "And understandably, given the previous failures of cessations of hostilities to hold, we approach it with some scepticism", he said.

"But it is worth trying", he said.

Syria's second largest city has been a major battle ground between the regime and anti-Assad forces since the conflict began in 2011.

Turkey-backed Free Syrian Army rebels have cleared the area between the northern Syrian border towns of Azaz and Jarablus, Turkey's prime minister, Binali Yildirim, said.

Some 4.8 million of Syria's pre-war population of 22.4 million have fled overseas, with another 8.7 million predicted to be displaced inside the country in 2016, according to the United Nations refugee agency.

  • Sonia Alvarado