Scott Ritter gives a great update and is the only one who's correctly expressing the motivation for Putin to be in Ukraine at all. However he does differ from putting himself in that Putin himself said that he knew he could not take on NATO with conventional forces. He knew that back in his speech in february. And that was when he first said but of course we are a nuclear power and if the integrity of Russia is threatened or the survival of Russia is threatened paraphrasing that we have all these nuclear weapons.