It's not just about nukes.
How many of these examples you bring up involve the bloody dictator invading and attempting to seize control of another nation? None. That's the main difference here. The US/NATO priority is to save innocent lives in a contry being victimized by a barbaric, violent invasion. Putin keeps making it harder and harder for lives to be saved. Still, the idea of NATO getting directly involved in fighting Russian troops is a total non-starter. The chances of a US attack on Moscow is zero. Absolutely zero.
Again, if Putin was committing mass murder on Russian soil, then your comparisons would make more sense.
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