"All known" Syrian government targets were under fire by Turkish air and land support units, Turkey's communications director Fahrettin Altun was quoted by state news agency Anadolu as saying. Turkey had decided to "respond in kind" to the attack, Mr Altun said.

The scene is set for a full-scale confrontation between Turkey and Syria.

This leaves all sorts of questions.

And is there any way to persuade the Syrian regime to halt its wider offensive in Idlib?

This appears doubtful since Syrian President Bashar al-Assad seems intent on taking back control of the area, and the Russians have already been backing him to this end.

https://www.bbc.com/news/world-middle-east-51667717