If you don't think that Putin is the one who lobbed off that MOAB, then you're either naive to the extreme, or a somewhat cunning manipulator.
You know who's a cunning manipulator, specialized in manipulate foreigners to do what he wants, in this case act more like a braggart bully so he loses international credibility, which also helps destabilize NATO?
If you're Putin, when do you think is best to look for trouble? with the US leading NATO, or with NATO having literally half their might all of a sudden?