The point here is that the timing of this terrorist attack was perfectly coordinated to take media attention away from Israel's ongoing slaughter and genocide of women and children in Gaza.

It is also important to note that the current "leader" like the previous dictator of the Ukraine is a dual citizen Israeli. Means motive opportunity and who benefits.

Putin in no way shape or form benefits from this. In fact just the opposite is the case.  So the chances that he did it are about zero.

On the other hand the current Ukrainian leadership has little to lose and lots to gain from this. This gives them the chance to frame Putin, garner international support, do the bidding of their masters in Israel etc.

Clearly the Ukraine directly and indirectly benefits from this attack.