Doesn’t matter at all as whatever the British and the Russians may or may not possibly have done or not done depending upon the prevailing system of truth and factual accountability of the time in question or the present time is well known to have been done solely in the interests of a better and more just world. Amen.
There is a slight difference. The Brits were fighting a war against the Boers. Stalin and Hitler did it to their own people. I also think the Brits had the idea but really didn’t think it through, and weren’t prepared to properly care for so many prisoners. It was more of a crime of ineptness and omission rather than a cold-blooded desire to kill the undesirables.