What do you mean by "stay out of the affairs of other sovereign countries."
No one is calling for us to drop freedom bombs on China.
Should the United States have, as an example, stayed out of the domestic affairs of apartheid-era South Africa and not levied sanctions, boycotts, etc against her due to the apartheid policies?
And yes, I am aware the United States has for the past 150 years variously stayed in and out of the affairs of various countries depending on how it suited our "national interests."