In principle, our diplomats have mentioned "respecting the prohibition on the use of force enshrined in international law and the territorial integrity of sovereign states"

using those words as search terms yields:

https://legal.un.org/repertory/art2/english/rep_supp7_vol1_a...

https://legal.un.org/repertory/art2.shtml

In practice, command responsibility is generally upheld against losing commanders: https://en.wikipedia.org/wiki/Superior_orders

but an effective way to avoid being tried, at least in the short term, is to be a winning commander: https://founders.archives.gov/documents/Adams/06-02-02-0072-...

(Alexander the Great, on his deathbed, was asked who would inherit his empire; whether because he was an early "realist" or because he was apathetic or simply narcissistic [or?], he replied: the strongest)