After chairing emergency talks between NATO ambassadors, Secretary-General Jens Stoltenberg called on Syria and Russia "to stop their offensive, to respect international law and to back U.N efforts for a peaceful solution."
"This dangerous situation must be de-escalated and we urge an immediate return to the 2018 cease-fire to avoid the worsening of the horrendous humanitarian situation in the region," Stoltenberg said.
Turkey's allies also expressed their condolences over the deaths, but no additional NATO support was offered during the meeting.
Apart from providing some aerial surveillance over Syria, NATO plays no direct role in the conflict-torn country, but its members are deeply divided over Turkey’s actions there, and European allies are worried about the arrival of any new waves of refugees.