Like the US is carrying out repeated war crimes and the West does nothing - or the "East" for that matter. If something goes to court in the US if it even does, punishment is light [2] and pushed down to the lowest levels (Lynndie England got 2 years [1]). Or pushed by the president (Drone kills without a declaration of war).
If you have nuclear weapons and a large defence budget, you can do whatever you like to other countries.
[1] https://en.wikipedia.org/wiki/Abu_Ghraib_torture_and_prisone...