Russia Ukraine war, page-221065

Great Powers cherrypick international law (and that includes that USA)
simply because they can. In fact neither Russia or the USA recognise the ICC
which is the administrator of international law and treaties.

Here is a list of laws/treaties that the US does not recognise/subscribe to:

https://www.cfr.org/blog/international-treaties-united-states-refuses-play-ball

So again the old adage is apt here: "What's good for the goose is also good for the gander", eh mate?