US-backed Syrian rebels say they are advancing on a town on the border with Iraq held by so-called Islamic State.
A New Syrian Army statement said it had captured a number of IS positions on the outskirts of Albu Kamal, which the jihadist group seized in 2014.
The rebels earlier overran the nearby Hamdan military airport with the help of US-led coalition air strikes.
The offensive, which began on Tuesday, is aimed at cutting a key route between IS-controlled areas in Syria and Iraq.
The NSA said it was co-ordinating the assault with Iraqi government forces, who were advancing on the border from the other side.
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http://www.bbc.co.uk/news/world-middle-east-36660861
