Syrian rebels say they have captured an airport near the border with Iraq.
The Syrian Observatory of Human Rights, an activist network, said rebels now controlled “large swathes of land in the area”.
Meanwhile, France said it would allow the Syrian opposition to appoint an ambassador to Paris.
French President Francois Hollande announced the move after talks with the head of a newly formed opposition coalition, Moaz al-Khatib.
Mr Khatib said that the new ambassador’s post would be filled by Monzir Makhous, an academic.
France became the first Western nation to recognise the National Coalition earlier this week.
Also on Saturday, Syrian government forces released a Turkish cameraman who had been held since August.
Cuneyt Unal was taken captive in Aleppo in August.
Activists and observers say more than 38,000 people have been killed in the uprising against Syrian President Bashar al-Assad, which began last year.