
Jihadist fighters cut the Damascus to Aleppo highway on Thursday during an offensive that a monitor says killed around 200, including civilians hit by Russian air force strikes.
A day earlier, jihadist group Hayat Tahrir al-Sham (HTS) and allied factions launched a surprise attack on government-held areas of northern Aleppo province, triggering the fiercest fighting in years, the Syrian Observatory for Human Rights said.