Russian and regime air strikes also killed 21 jihadist and Islamist fighters in the same region the same day, the Britain-based monitor added. The Idlib region of some three million people is supposed to be protected from a massive regime offensive by a buffer zone deal that Russia and Turkey signed in September.
But it was never fully implemented, as jihadists refused to withdraw from a planned demilitarised zone. In January, the Hayat Tahrir al-Sham alliance led by Syria's former Al-Qaeda affiliate extended its administrative control over the region, which includes most of Idlib province as well as adjacent slivers of Latakia, Hama and Aleppo provinces.