UN Secretary-General Antonio Guterres called Tuesday for an end to fighting between Turkey and Syria in Syria's opposition-held province of Idlib on Tuesday.
Guterres told reporters it was an "extremely worrying" escalation in the conflict that the Turkish army and the Syrian regime were now "bombing each other" in the restive northwest region.
"My strong appeal is for a cessation of hostilities," he said.
"We don't believe there is a military solution for the conflict in Syria. We have said time and time again that the solution is political," Guterres added.