Syrian rebels have launched a large-scale attack on regime forces in western Aleppo, according to a Free Syrian Army source and local residents, marking the first major flare-up in years between both sides.

At least 18 people have been killed in fighting between Islamist rebels and Syrian government troops in north-west Syria, activists and a monitoring group said Wednesday. The Syrian Observatory for Human Rights said members of Hayat Tahrir al Sham,

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