I read it, but its not a statement from NATO. It is a statement from an anonymous source to CNN. It also says that they do not know who shot it down. Only that it was a BUK and that it most likely came from Eastern Ukraine, not Russia. That they are still analyzing.
The article did say that Ukraine doesn’t possess any such launchers even though they are a former soviet republic and that one might have been captured from them by the rebels in Eastern Ukraine. That appears to be a lie. If Ukraine don’t have any, how did the rebels capture one from them? If that contradiction isn’t sketchy enough to raise a few eyebrows, I don’t know what is.
Here are articles showing who possesses them.
http://en.wikipedia.org/wiki/Buk_missile_system
http://en.uos.ua/produktsiya/tehnika-pvo/75-zenitniy-raketniy-kompleks-buk
All sides have BUKs. A BUK took down the plane. None of that is in question. Only who shot it.