Summary
Hundreds of Syrian rebels prepared to head to frontlines in northern Aleppo province on Thursday, after crossing from Turkey to reinforce fighters battling Kurdish militia.
The fighters are expected to head to frontlines nearby with the Syrian Democratic Forces, which has in recent days seized several former rebel bastions in Aleppo province.
Russian warplanes have carried out strikes benefitting the alliance as it has advanced, and its successes have come as government troops backed by Russia's air power have pressed their own major military operation further south in Aleppo province.
The government advances in the area bring them closer to the strategic town of Jisr al-Shughur in neighboring Idlib province, which has been a key goal for government forces since it fell to rebels last April.
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