By our understanding of perfection OO. We define God as perfect in that respect. The story is set with that precept, therefore you can know that we're talking justified killing here, no matter how implausible that might sound to you.
Stalin was a human being who we can know didn't possess knowledge of all ramifications of his actions into infinite future, so can judge his actions as unjust.
Stalin was a human being who we can know didn't possess knowledge of all ramifications of his actions into infinite future, so can judge his actions as unjust.