^Thank you for your link.
1. The BBC - now there is an unbiased source.
2. The studio reporter says, appers to ...., appers to .... - deniability when the facts are eventually known.
3. The studio reporter says Ukraine has hinted it was them ....
4. When were planet labs images taken? Pictures of an attack on the Russian base or somebody else's base, taken some time ago?
5. The "local BBC reporter, based in Kyive reporter, does not speak very strongly but states Ukraine sources, "The attack was from local saboteurs" ....
No concrete evidence that could not be "photoshopped" by a 10-year-old.
But you may be right in the end. We shall see.