So it’s not a stretch to think that once a Russian tank would cross into Poland it would be met with immediate lethal force.
[0] https://news.yahoo.com/downing-russia-jet-stab-back-putin-13...
It was one jet, and it wasn't fighter jet, but assault jet, it didn't carry any AA missiles and couldn't defend himself.
So it’s not a stretch to think that once a Russian tank would cross into Poland it would be met with immediate lethal force.
[0] https://news.yahoo.com/downing-russia-jet-stab-back-putin-13...