So you don't know either and to raise the question is somehow wrong?? Nah; I am not confident that Biden won't blunder into catastrophe as he really IS that stupid!!!Lol, this whole discussion is only fought on message boards and by people like Tucker Carlson. The countries involved are perfectly aware or at the very least strongly suspect who did it and why. International relations aren't courts of law. The only people Putin needs to convince are those in the governments of the West.
So no, Putin doesn't need to claim responsibility. In fact, by not doing so, people like Tucker Carlson are free to confuse the situation providing plausible deniability for him within the general populace. While at the same time making it clear to the West that it's a mistake to believe they know what he will and won't do. Do you have any idea how much of a gift having someone like Tucker Carlson blaming his own country is for the Kremlin? They can have their talking heads on state tv say" look even Americans admit to it."
Greg