Still doesn't make an actual invasion more plausible in any real way. This is something that happens all the time. Jets from both sides fly near China and North Korea all the time. Again, their sovereignty remains and...
> was part of the strategy of trying to push the line further East
... their borders remain unchanged. As Russia (and the US) well knows, you can't change borders without sending the tanks in. And as the US has learnt the hard way, even then, it's probably not worth it.
Still doesn't make an actual invasion more plausible in any real way. This is something that happens all the time. Jets from both sides fly near China and North Korea all the time. Again, their sovereignty remains and...
> was part of the strategy of trying to push the line further East
... their borders remain unchanged. As Russia (and the US) well knows, you can't change borders without sending the tanks in. And as the US has learnt the hard way, even then, it's probably not worth it.