The war and the war crimes perpetrated by Putin's forces are exclusively Putin's fault.
A BBC article that describes Russian war crimes through Russian shelling of Ukrainian cities and the mass graves of murdered Ukrainian civilians by Russian shelling is not the rebuttal you think it is.
From the article YOU linked - "Russian bombardment" is the reason why mass graves are needed.
Russia's Bucha massacre, one of many throughout Ukraine was investigated. Just because you are unaware of major developments does not meant they did not happen. Improving and expanding your research beyond Kremlin propaganda sites will help greatly in your education.
