[ordinary]

> Russia violated Turkey’s airspace only once, the jet was shot down immediately, and, save to say, Putin was on the phone with Ankara to prevent an all out escalation with a NATO member that can trigger article 5 at any time for self defense after an apparent aggression. Turned out, no more airspace violations happened again.

I was on the same page as you for a long time, but aggressively defending your airspace also increases risk of collateral damage, leading to, for example, your military shooting down Azeri passenger jets. Or Malaysian ones. Or Iranian ones (to name one not committed by Russia).