The sudden assault by Syrian rebels has rapidly redrawn the civil war’s front lines and threatened once again the authority of President Bashar al-Assad.

Forces opposed to President Bashar al-Assad have captured the Aleppo airport and are attacking the western city of Hama, according to local officials and a Britain-based war monitor.

A surprise offensive by rebel forces opposed to Syrian President Bashar al-Assad's regime has led to a new round of fighting in a largely static civil war.

Syrian rebels launched a surprise offensive into western Aleppo, challenging years of government control and reigniting fears in a war-weary city.

Aleppo, once a symbol of Assad’s triumph in the Syrian Civil War, has again become a battlefield as rebel forces have seized the city.