Double standard is the right word indeed. In fact, Trump acts very much the same wrt Iran as Putin acts towards Ukraine. Using very similar arguments why the 'special operations' is allowed, calling it not a war etc etc etc.

USA is full of self censorship is what I am told by some US citizens themselves. Something that isn't just now, but has been for a very long time. Many don't want to be called anti-American, therefore they not say everything they may think.