No matter what legal experts say (especially those from the pursuing country are pretty much irrelevant) - any more violations of foreign nation's sovereignty by specific countries would only deteriorate the international security situation.

Something like the violation of national sovereignty for such a low-ranking reason like pursuit of some irregular fighters can over time create (reinforce) the perception that a country considers all non-allied countries as fair game.

It's pretty bad that the Israelis and Turks very often cross their borders.
The Turks have the excuse that Northern Iraq is/was not controlled by the central government and the Israelis pay for their behaviour with 'poor' relations to all nearby nations.

It's really not worth it.