Interesting. To be fair, in that case (assuming the article is accurate) the plane departed from Kiev, so it would seem that Ukraine would in that case have a reasonable claim that the plane is in their jurisdiction. I don't know the specifics of aviation treaties, so I can't really say for sure if this was improper.
On the other hand, if Ukraine did this just to harass a journalist saying things they didn't like (once again if we take the RT article at face value), then that's a questionable action that deserves to be criticized.
On the other hand, if Ukraine did this just to harass a journalist saying things they didn't like (once again if we take the RT article at face value), then that's a questionable action that deserves to be criticized.