Rebel fighters raided a Syrian army outpost at a key border crossing with Turkey on Thursday in an attempt to seize control of the gate, but were forced to withdraw after coming under attack by military helicopters, a rebel spokesman said.

The dawn attack was the third time in 10 days rebels have tried to seize the Bab al-Hawa gate, a vital commercial crossing in northwestern Syria, opposite the Turkish Cilvegozu gate in Hatay province.

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