It is easy to claim that sanctions against the US would have been legitimate when it is clear to most that they would have had little to no meaningful impact.
Now, just china imposing sanctions, would seriously fuck with US economy. Add on EU to that, and the situation would be pretty bad for americans.
* There are a lot of Indians openly support Putin. I guess there is an excuse to justify the invasion because Russia is not the first one doing that.
* Inside China there are a lot of debate. Russians invasion obviously breaks the international law. But if US did the same thing in Yugoslavia, Iraq, Libya, Syria ...(Let's not debate if US conducted good invasion to avoid to going to rabbit hole), also indirectly caused humanity disaster and refugees, why put Russia in a different standard?
Not making judgement of which is correct or wrong, just saying it's difficult to convince certain population if different standards were applied.