In addition to what the introduction says about giving multiple warnings to the pilot, the Background section covers that they had also given multiple warnings about previous similar incidents and told Russia that if they kept doing this there would be consequences. This was therefore those consequences, and guess what? Russia backed off and stopped entering Turkish airspace.
Turkey knows how to respond to Russian aggression.
https://en.m.wikipedia.org/wiki/2015_Russian_Sukhoi_Su-24_shootdown
In addition to what the introduction says about giving multiple warnings to the pilot, the Background section covers that they had also given multiple warnings about previous similar incidents and told Russia that if they kept doing this there would be consequences. This was therefore those consequences, and guess what? Russia backed off and stopped entering Turkish airspace.