Yes but he's specifically targeted a non NATO country who wanted to join, who wanted to westernise, he knew no matter how many emotional requests Ukraine made for assistance, it would all fall short of a physical presence.
He can sit there and say "but they aren't coming to help you are they, if they really, really wanted to they could, you keep asking and begging but they keep saying no as your civilians are dying."
Like some horrific and disturbed ear worm.
It's like some sort psychological warfare on Ukraine. He can see the people pleading for help, screaming no fly zone but it isn't coming.
Now we know why, we can't, it has implications, but when you are desperate and begging, rational thought and understanding of global politics and alliances understandably go out the window.